Improve Documentation for Restoration from backup (#29321)

Comment the default path for repos and suggest using doctor for when
things are stuck

Author: kralo

docs/content/administration/backup-and-restore.en-us.md

@@ -92,7 +92,7 @@ cd gitea-dump-1610949662
 mv app.ini /etc/gitea/conf/app.ini
 mv data/* /var/lib/gitea/data/
 mv log/* /var/lib/gitea/log/
-mv repos/* /var/lib/gitea/gitea-repositories/
+mv repos/* /var/lib/gitea/data/gitea-repositories/
 chown -R gitea:gitea /etc/gitea/conf/app.ini /var/lib/gitea
 
 # mysql
@@ -111,6 +111,8 @@ With Gitea running, and from the directory Gitea's binary is located, execute: `
 
 This ensures that application and configuration file paths in repository Git Hooks are consistent and applicable to the current installation. If these paths are not updated, repository `push` actions will fail.
 
+If you still have issues, consider running `./gitea doctor check` to inspect possible errors (or run with `--fix`).
+
 ### Using Docker (`restore`)
 
 There is also no support for a recovery command in a Docker-based gitea instance. The restore process contains the same steps as described in the previous section but with different paths.