Update documentation link (#4405)

README.md

@@ -7,7 +7,7 @@
 
 [![Chat Server](https://img.shields.io/badge/chat-on%20discord-7289da.svg)](https://discord.gg/SpmNs4S)
 [![devto](https://img.shields.io/badge/blog-dev.to-black.svg)](https://dev.to/tauri)
-[![devto](https://img.shields.io/badge/documentation-tauri.studio-purple.svg)](https://tauri.studio/guides/getting-started/prerequisites/)
+[![devto](https://img.shields.io/badge/documentation-tauri.app-purple.svg)](https://tauri.app)
 [![https://good-labs.github.io/greater-good-affirmation/assets/images/badge.svg](https://good-labs.github.io/greater-good-affirmation/assets/images/badge.svg)](https://good-labs.github.io/greater-good-affirmation)
 [![support](https://img.shields.io/badge/sponsor-open%20collective-blue.svg)](https://opencollective.com/tauri)