Clean up theming sections in WooCommerce blocks docs (#48420)

* Clean up theming sections in WooCommerce blocks docs

* Add changelog file

* Change intro text

* Fix TOC

plugins/woocommerce-blocks/docs/README.md

@@ -5,7 +5,7 @@
 -   [Contributors](#contributors)
 -   [Internal developers](#internal-developers)
 -   [Third-party developers](#third-party-developers)
--   [Designers](#designers)
+-   [Designers and theme developers](#designers-and-theme-developers)
 -   [Block References](#block-references)
 -   [Developer Resources](#developer-resources)
     -   [Tools](#tools)
@@ -107,18 +107,11 @@ The WooCommerce Blocks Handbook provides documentation for designers and develop
         -   [Slot and Fill](../packages/checkout/slot/README.md)
         -   [Utilities](../packages/checkout/utils/README.md)
 
-## Designers
+## Designers and theme developers
 
-> Are you a designer? The following documents explain how to apply design-changes to the WooCommerce Blocks plugin.
+> The following document explains how to to create block themes that work in WooCommerce and how to customize the styles of WooCommerce blocks.
 
 -   [Theming](designers/theming/README.md)
-    -   [Filter blocks](designers/theming/filter-blocks.md)
-    -   [Cart and Checkout](designers/theming/cart-and-checkout.md)
-    -   [Class names update in 4.6.0](designers/theming/class-names-update-460.md)
-    -   [Class names update in 3.4.0](designers/theming/class-names-update-340.md)
-    -   [Class names update in 3.3.0](designers/theming/class-names-update-330.md)
-    -   [Class names update in 2.8.0](designers/theming/class-names-update-280.md)
-    -   [Product grid blocks style update in 2.7.0](designers/theming/product-grid-270.md)
 
 ## Block References
 

plugins/woocommerce/changelog/fix-woocommerce-docs-theming-cleanup

@@ -0,0 +1,4 @@
+Significance: patch
+Type: update
+
+Clean up theming sections in WooCommerce blocks docs