kgb: document where the trocla token is defined

howto/gitlab.md

@@ -335,6 +335,8 @@ in Puppet's Trocla database as `profile::kgb_bot::gitlab_token`:
 
     trocla get profile::kgb_bot::gitlab_token plain
 
+That is configured in `profile::kgb_bot` in case that is not working.
+
 ## Setting up two-factor authentication (2FA)
 
 We strongly recommend you enable two-factor authentication on