Polishing

Closes gh-30453

.gitignore

@@ -50,3 +50,5 @@ atlassian-ide-plugin.xml
 
 # VS Code
 .vscode/
+
+cached-antora-playbook.yml

antora-playbook.yml

@@ -15,7 +15,8 @@ git:
 content:
   sources:
   - url: https://github.com/spring-projects/spring-framework
-    # Information on refname matching https://docs.antora.org/antora/latest/playbook/content-refname-matching/
+    # Refname matching:
+    # https://docs.antora.org/antora/latest/playbook/content-refname-matching/
     branches: ['main', '{6..9}.+({0..9}).x']
     tags: ['v{6..9}.+({0..9}).+({0..9})?(-{RC,M}*)', '!(v6.0.{0..8})', '!(v6.0.0-{RC,M}{0..9})']
     start_path: framework-docs