Fix help block link contrast

Fixes #10990

CHANGELOG.txt

@@ -46,6 +46,7 @@ Changelog
  * Fix: Ensure 'mark as active' label in workflow bulk action set active form can be translated (Rohit Sharma)
  * Fix: Ensure the panel title for a user's settings correctly reflects the `WAGTAIL_EMAIL_MANAGEMENT_ENABLED` setting by not showing 'email' if disabled (Omkar Jadhav)
  * Fix: Update Spotify oEmbed provider URL parsing to resolve correctly (Dhrűv)
+ * Fix: Update link colours within help blocks to meet accessible contrast requirements (Rohit Sharma)
  * Docs: Document `WAGTAILADMIN_BASE_URL` on "Integrating Wagtail into a Django project" page (Shreshth Srivastava)
  * Docs: Replace incorrect screenshot for authors listing on tutorial (Shreshth Srivastava)
  * Docs: Add documentation for building non-model-based choosers using the _queryish_ library (Matt Westcott)

client/scss/components/_help-block.scss

@@ -16,13 +16,13 @@
   }
 
   a {
-    color: theme('colors.secondary.DEFAULT');
+    color: theme('colors.secondary.400');
     text-decoration: underline;
     text-decoration-thickness: 2px;
     text-underline-offset: 3px;
 
     &:hover {
-      color: theme('colors.secondary.400');
+      color: theme('colors.secondary.600');
       text-decoration: none;
     }
   }

docs/releases/5.2.md

@@ -61,6 +61,7 @@ depth: 1
  * Ensure 'mark as active' label in workflow bulk action set active form can be translated (Rohit Sharma)
  * Ensure the panel title for a user's settings correctly reflects the `WAGTAIL_EMAIL_MANAGEMENT_ENABLED` setting by not showing 'email' if disabled (Omkar Jadhav)
  * Update Spotify oEmbed provider URL parsing to resolve correctly (Dhrűv)
+ * Update link colours within help blocks to meet accessible contrast requirements (Rohit Sharma)
 
 ### Documentation