gitea admin user delete --help gives misleading documentation

[strk]

This is the current --help output for gitea admin user delete:

NAME:
   Gitea admin user delete - Delete specific user

USAGE:
   Gitea admin user delete [command options] [arguments...]

OPTIONS:
   --id value                     ID of authentication source (default: 0)
   --custom-path value, -C value  Custom path file path (default: "/home/git/custom")
   --config value, -c value       Custom configuration file path (default: "/home/git/custom/conf/app.ini")
   --version, -v                  print the version
   --work-path value, -w value    Set the gitea working path (default: "/home/git")

BUT the --id switch does NOT specify an authentication source. Instead it is used as the user identifier (not easy to figure out, btw). I'd think it's a bug in implementation rather than documentation, and that the implmeentation is missing a --username switch to reference users by username instead of id

[strk]

Note this is as of current master (980b0df)