[GITLAB] spelling/typo: Shouldn't this thing called 'Merge Bot'?

[Dieter Nützel]

Hello Eric, hello all,

saw latest commits:

committer	Marge Bot <eric+marge at anholt.net>
[-]
Reviewed-by: Jason Ekstrand <jason at jlekstrand.net>
Tested-by: Marge Bot 
<https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3070>
etc.

What do you think?

Greetings,
Dieter