chore: move plugin docs around

Author: rigor789

.vitepress/config.js

@@ -94,11 +94,10 @@ function getSidebar() {
 
 function getPluginsSidebar() {
 	return [
+    { text: 'Developing Plugins', link: '/plugins/developing-plugins' },
 		{
-			text: 'Plugins',
+			text: 'Official Plugins',
 			children: [
-				{ text: 'Developing Plugins', link: '/developing-plugins' },
-				{ text: '-----------', link: '#' },
 				{ text: 'Background HTTP', link: '/plugins/background-http' },
 				{ text: 'Brightness', link: '/plugins/brightness' },
 				{ text: 'Camera', link: '/plugins/camera' },

README.md

@@ -49,7 +49,7 @@ The outline of the docs:
   - Multithreading & Workers
   - Metadata filtering
 - [Releasing your app](/releasing.md)
-- [Developing Plugins](/developing-plugins.md)
+- [Developing Plugins](/plugins/developing-plugins.md)
 - [Common Pitfalls](/common-pitfalls.md)
 
   - Layout Nesting