Organise 'Under the Hood'

Summary: This change alphabetically sorts the 'Under the Hood' section and adds a 'Meta' parent category for everything that is internal as to add a visual cue of what is internal and whats not.

Reviewed By: passy

Differential Revision: D41273678

fbshipit-source-id: 1acf8da184762d5924bff90b6691be1e4be92c46

docs/extending/testing-rn.mdx

@@ -1,7 +1,7 @@
 ---
 id: testing-rn
 title: Testing React Native Changes in the Sample App
-sidebar_label: Testing RN Changes
+sidebar_label: Testing React Native Changes
 ---
 import useBaseUrl from '@docusaurus/useBaseUrl';
 

website/sidebars.js

@@ -150,11 +150,13 @@ module.exports = {
       {
         'Contributing to the Documentation': ['internals/documentation-formatting', 'internals/documentation-writing-guide'],
       },
+      'internals/device-identifiers',
+      'internals/linters',
       'extending/public-releases',
       'extending/testing-rn',
-      'internals/linters',
-      'internals/device-identifiers',
       ...fbInternalOnly([
+        {
+          "Meta": [
             'fb/release-infra',
             'fb/LauncherConfig',
             'fb/hacking-on-launcher',
@@ -175,6 +177,8 @@ module.exports = {
             'fb/scribe',
             'fb/async-testing',
             'fb/connections',
+          ]
+        }
       ]),
     ],
   },