docs: fix broken relative page links (#1106)

In touching up the migration guide, I noticed that many of our documentation site links are broken! For example, on the homepage, this link:

<img width="782" alt="screenshot of homepage; code snippet is in next block" src="https://user-images.githubusercontent.com/14893287/210462690-31aa7bf5-dd79-4e8f-a3c5-1213e73771c4.png">

which has the following href

```code
<a href="/just-the-docs/just-the-docs/CHANGELOG/">the CHANGELOG</a>
```

duplicates the `baseurl` twice. There are 14 such broken links across the site. Each link duplicates the `baseurl` and `link` tags, which has since been resolved with links being relative by default (there's a set of PRs that document this - I can't find the exact paper trail right now).

To resolve this, I:

- find and replace site-wide `{{ site.baseurl }}{% link` with `{% link`
- tested each link, which now works properly locally *and* on the deploy preview

I'm surprised we didn't catch this earlier! I also could be missing something else, in which case feedback on this PR is certainly welcome.

docs/configuration.md

@@ -79,7 +79,7 @@ mermaid:
   version: "9.1.3"
 ```
 
-See [the Code documentation]({{ site.baseurl }}{% link docs/ui-components/code.md %}#mermaid-diagram-code-blocks) for more configuration options and information.
+See [the Code documentation]({% link docs/ui-components/code.md %}#mermaid-diagram-code-blocks) for more configuration options and information.
 
 ## Aux links
 
@@ -106,7 +106,7 @@ heading_anchors: true
 ## External navigation links
 
 External links can be added to the navigation through the `nav_external_links` option.
-See [Navigation Structure]({{ site.baseurl }}{% link docs/navigation-structure.md %}#external-navigation-links) for more details.
+See [Navigation Structure]({% link docs/navigation-structure.md %}#external-navigation-links) for more details.
 
 ## Footer content
 
@@ -162,7 +162,7 @@ jtd.addEvent(toggleDarkMode, 'click', function(){
 });
 </script>
 
-See [Customization]({{ site.baseurl }}{% link docs/customization.md %}) for more information.
+See [Customization]({% link docs/customization.md %}) for more information.
 
 ## Callouts
 
@@ -215,7 +215,7 @@ The value of `callouts_level` is either `quiet` or `loud`;
 The default level is `quiet` when using the `light` or custom color schemes,
 and `loud` when using the `dark color scheme.`
 
-See [Callouts]({{ site.baseurl }}{% link docs/ui-components/callouts.md %}) for more information.
+See [Callouts]({% link docs/ui-components/callouts.md %}) for more information.
 
 ## Google Analytics
 

docs/customization.md

@@ -149,7 +149,7 @@ Just the Docs provides the following custom includes files:
 
 `_includes/toc_heading_custom.html`
 
-If the page has any child pages, and `has_toc` is not set to `false`, this content appears as a heading above the [auto-generating list of child pages]({{ site.baseurl }}{% link docs/navigation-structure.md %}#auto-generating-table-of-contents) after the page's content.
+If the page has any child pages, and `has_toc` is not set to `false`, this content appears as a heading above the [auto-generating list of child pages]({% link docs/navigation-structure.md %}#auto-generating-table-of-contents) after the page's content.
 
 #### Example
 {: .no_toc }
@@ -165,7 +165,7 @@ The (optional) `text-delta` class makes the heading appear as **Contents**{:.tex
 
 `_includes/footer_custom.html`
 
-This content appears at the bottom of every page's main content. More info for this include can be found in the [Configuration - Footer content]({{ site.baseurl }}{% link docs/configuration.md %}#footer-content).
+This content appears at the bottom of every page's main content. More info for this include can be found in the [Configuration - Footer content]({% link docs/configuration.md %}#footer-content).
 
 ### Custom Head
 

docs/navigation-structure.md

@@ -235,7 +235,7 @@ Currently, the navigation structure is limited to 3 levels: grandchild pages can
 
 ## Auxiliary Links
 
-To add auxiliary links to your site (in the upper right on all pages), add it to the `aux_links` [configuration option]({{ site.baseurl }}{% link docs/configuration.md %}#aux-links) in your site's `_config.yml` file.
+To add auxiliary links to your site (in the upper right on all pages), add it to the `aux_links` [configuration option]({% link docs/configuration.md %}#aux-links) in your site's `_config.yml` file.
 
 #### Example
 {: .no_toc }
@@ -251,7 +251,7 @@ aux_links:
 
 ## External Navigation Links
 
-To add external links to the navigation, add them to the `nav_external_links` [configuration]({{ site.baseurl }}{% link docs/configuration.md %}) option in your site's `_config.yml` file.
+To add external links to the navigation, add them to the `nav_external_links` [configuration]({% link docs/configuration.md %}) option in your site's `_config.yml` file.
 External links will appear in the navigation after the links to ordinary pages, but before any collections.
 
 #### Example

docs/ui-components/buttons.md

@@ -56,7 +56,7 @@ GitHub Flavored Markdown does not support the `button` element, so you'll have t
 
 ### Button size
 
-Wrap the button in a container that uses the [font-size utility classes]({{ site.baseurl }}{% link docs/utilities/typography.md %}) to scale buttons:
+Wrap the button in a container that uses the [font-size utility classes]({% link docs/utilities/typography.md %}) to scale buttons:
 
 <div class="code-example" markdown="1">
 <span class="fs-6">
@@ -79,7 +79,7 @@ Wrap the button in a container that uses the [font-size utility classes]({{ site
 
 ### Spacing between buttons
 
-Use the [margin utility classes]({{ site.baseurl }}{% link docs/utilities/layout.md %}#spacing) to add spacing between two buttons in the same block.
+Use the [margin utility classes]({% link docs/utilities/layout.md %}#spacing) to add spacing between two buttons in the same block.
 
 <div class="code-example" markdown="1">
 [Button with space](http://example.com/){: .btn .btn-purple .mr-2 }

docs/ui-components/callouts.md

@@ -7,14 +7,14 @@ nav_order: 7
 
 # Callouts
 
-Markdown does not include support for callouts. However, you can style text as a callout using a Markdown extension supported by kramdown: [*block IALs*](https://kramdown.gettalong.org/quickref.html#block-attributes). 
+Markdown does not include support for callouts. However, you can style text as a callout using a Markdown extension supported by kramdown: [*block IALs*](https://kramdown.gettalong.org/quickref.html#block-attributes).
 
 Common kinds of callouts include `highlight`, `important`, `new`, `note`, and `warning`.
 
 {: .warning }
 These callout names are *not* pre-defined by the theme: you need to define your own names.
 
-When you have [configured]({{ site.baseurl }}{% link docs/configuration.md %}#callouts) the  `color` and (optional) `title` for a callout, you can apply it to a paragraph, or to a block quote with several paragraphs, as illustrated below.[^postfix]
+When you have [configured]({% link docs/configuration.md %}#callouts) the  `color` and (optional) `title` for a callout, you can apply it to a paragraph, or to a block quote with several paragraphs, as illustrated below.[^postfix]
 
 [^postfix]:
     You can put the callout markup either before or after its content.

docs/ui-components/typography.md

@@ -111,4 +111,4 @@ Text can be **bold**, _italic_, or ~~strikethrough~~.
 
 There are a number of specific typographic CSS classes that allow you to override default styling for font size, font weight, line height, and capitalization.
 
-[View typography utilities]({{ site.baseurl }}{% link docs/utilities/typography.md %}){: .btn .btn-outline }
+[View typography utilities]({% link docs/utilities/typography.md %}){: .btn .btn-outline }

index.md

@@ -18,7 +18,7 @@ Just the Docs gives your documentation a jumpstart with a responsive Jekyll them
 ---
 
 {: .warning }
-> This website documents the features of the current `main` branch of the Just the Docs theme. See [the CHANGELOG]({{ site.baseurl }}{% link CHANGELOG.md %}) for a list of releases, new features, and bug fixes. 
+> This website documents the features of the current `main` branch of the Just the Docs theme. See [the CHANGELOG]({% link CHANGELOG.md %}) for a list of releases, new features, and bug fixes.
 
 Just the Docs is a theme for generating static websites with [Jekyll]. You can write source files for your web pages using [Markdown], the [Liquid] templating language, and HTML.[^1] Jekyll builds your site by converting all files that have [front matter] to HTML. Your [Jekyll configuration] file determines which theme to use, and sets general parameters for your site, such as the URL of its home page.
 
@@ -95,5 +95,5 @@ Just the Docs is committed to fostering a welcoming community.
 [GitHub Pages]: https://pages.github.com/
 [Template README]: https://github.com/just-the-docs/just-the-docs-template/blob/main/README.md
 [GitHub Pages / Actions workflow]: https://github.blog/changelog/2022-07-27-github-pages-custom-github-actions-workflows-beta/
-[customize]: {{ site.baseurl }}{% link docs/customization.md %}
+[customize]: {% link docs/customization.md %}
 [use the template]: https://github.com/just-the-docs/just-the-docs-template/generate