[htmlsidebar]: Replace manual HTML guides list with listSubPages (mdn#41179)

update html sidebar to use listSubPages

Author: dipikabh

files/en-us/web/html/guides/cheatsheet/index.md

@@ -1,6 +1,6 @@
 ---
 title: HTML cheatsheet for syntax and common tasks
-short-title: HTML cheatsheet
+short-title: Cheatsheet
 slug: Web/HTML/Guides/Cheatsheet
 page-type: guide
 sidebar: htmlsidebar

files/sidebars/htmlsidebar.yaml

@@ -3,19 +3,11 @@
 sidebar:
   - type: section
     link: /Web/HTML
-  - type: section
+  - type: listSubPages
+    path: /Web/HTML/Guides
     link: /Web/HTML/Guides
     title: Guides
-  - /Web/HTML/Guides/Content_categories
-  - /Web/HTML/Guides/Comments
-  - /Web/HTML/Guides/Date_and_time_formats
-  - /Web/HTML/Guides/Constraint_validation
-  - /Web/HTML/Guides/Viewport_meta_element
-  - /Web/HTML/Guides/Responsive_images
-  - /Web/HTML/Guides/Microdata
-  - /Web/HTML/Guides/Microformats
-  - /Web/HTML/Guides/Quirks_mode_and_standards_mode
-  - /Web/HTML/Guides/Cheatsheet
+    details: closed
   - type: section
     link: /Web/HTML/How_to
   - /Web/HTML/How_to/Define_terms_with_HTML