mkdocs.yml: dev 5.0 → user 5.0 (#2633)

* ~~mkdocs.yml: dev master → user latest~~
* mkdocs.yml: dev 5.0 → user 5.0

Author: adriendupuis

mkdocs.yml

@@ -950,7 +950,7 @@ extra:
   latest_tag_4_6: '4.6.19'
 
   symfony_doc: 'https://symfony.com/doc/5.x'
-  user_doc: 'https://doc.ibexa.co/projects/userguide/en/master'
+  user_doc: 'https://doc.ibexa.co/projects/userguide/en/5.0'
   connect_doc: 'https://doc.ibexa.co/projects/connect/en/latest'
 
 extra_css: