Fix broken `README` link (#24546)

README.md

@@ -110,7 +110,7 @@ Translations are done through Crowdin. If you want to translate to a new languag
 
 You can also just create an issue for adding a language or ask on discord on the #translation channel. If you need context or find some translation issues, you can leave a comment on the string or ask on Discord. For general translation questions there is a section in the docs. Currently a bit empty but we hope to fill it as questions pop up.
 
-https://docs.gitea.io/en-us/translation-guidelines/
+https://docs.gitea.io/en-us/contributing/translation-guidelines/
 
 [![Crowdin](https://badges.crowdin.net/gitea/localized.svg)](https://crowdin.com/project/gitea)