Fixes minor spacing and comment nits (#1128)

This PR simply fixes a few spacing and comment nits I found.

_includes/components/sidebar.html

@@ -7,10 +7,10 @@
   </div>
   <nav aria-label="Main" id="site-nav" class="site-nav">
     {% assign pages_top_size = site.html_pages
-        | where_exp:"item", "item.title != nil"
-        | where_exp:"item", "item.parent == nil"
-        | where_exp:"item", "item.nav_exclude != true"
-        | size %}
+          | where_exp:"item", "item.title != nil"
+          | where_exp:"item", "item.parent == nil"
+          | where_exp:"item", "item.nav_exclude != true"
+          | size %}
     {% if pages_top_size > 0 %}
       {% include nav.html pages=site.html_pages key=nil %}
     {% endif %}

_includes/icons/code_copy.html

@@ -1,4 +1,4 @@
-<!-- Feather. MIT License: https://github.com/twbs/icons/blob/main/LICENSE.md -->
+<!-- Bootstrap Icons. MIT License: https://github.com/twbs/icons/blob/main/LICENSE.md -->
 <symbol id="svg-copy" viewBox="0 0 16 16">
   <title>Copy</title>
   <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-clipboard" viewBox="0 0 16 16">

_includes/nav.html

@@ -58,7 +58,7 @@
 {%- endunless -%}
 
 {%- assign nav_order_pages = title_pages
-      | where_exp: "item", "item.nav_order != nil"  -%}
+      | where_exp: "item", "item.nav_order != nil" -%}
 {%- assign title_order_pages = title_pages
       | where_exp: "item", "item.nav_order == nil" -%}
 
@@ -174,7 +174,7 @@
           {%- if node.child_nav_order == 'desc' or node.child_nav_order == 'reversed' -%}
             {%- assign children_list = children_list | reverse -%}
           {%- endif -%}
-          <ul class="nav-list ">
+          <ul class="nav-list">
           {%- for child in children_list -%}
             {%- unless child.nav_exclude -%}
             <li class="nav-list-item {% if page.url == child.url or page.parent == child.title %} active{% endif %}">