[v1.16 backport] Enable clean URLs in VitePress config (#25759)

* [v1.16 backport] Enable clean URLs in VitePress config

* Remove the front page warning that only belongs on main

docs/.vitepress/config.mjs

@@ -31,6 +31,7 @@ export default defineConfig({
       tabsPlugin(md); //https://github.com/Red-Asuka/vitepress-plugin-tabs
     },
   },
+  cleanUrls: true,
 
   vite: {
     plugins: [

docs/en/_sidebar.md

@@ -1,5 +1,4 @@
 <!-- GENERATED CONTENT: DO NOT EDIT -->
-
 - [Introduction](/index.md)
   - [Basic Concepts](/getting_started/px4_basic_concepts.md)
 
@@ -81,6 +80,7 @@
     - [Reptile Dragon 2 (ARK6X)](/frames_plane/reptile_dragon_2.md)
     - [Turbo Timber Evolution (Pixhawk 4 Mini)](/frames_plane/turbo_timber_evolution.md)
     - [Wing Wing Z84 (Pixracer)](/frames_plane/wing_wing_z84.md)
+
 - [VTOL](/frames_vtol/index.md)
   - [Assembly](/assembly/assembly_vtol.md)
   - [VTOL Config/Tuning](/config_vtol/index.md)

docs/en/index.md

@@ -11,13 +11,6 @@ Developed by world-class developers from industry and academia, and supported by
 This guide contains everything you need to assemble, configure, and safely fly a PX4-based vehicle. Interested in contributing? Check out the [Development](development/development.md) section.
 :::
 
-:::warning
-This guide is for the _development_ version of PX4 (`main` branch).
-Use the **Version** selector to find the current _stable_ version.
-
-Documented changes since the stable release are captured in the evolving [release note](releases/main.md).
-:::
-
 ## How Do I Get Started?
 
 [Basic Concepts](getting_started/px4_basic_concepts.md) should be read by all users!