See gerrit 13558.
In the mail I received it says:
Krinkle has posted comments on this change.
Change subject: Link to CREDITS file on message 'version-poweredby-others'
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Patch Set 1:
Interesting, they made exception for that in wmf-config:
I suppose we can simply expect sites to make this work, and wmf will have to add the exception for CREDITS there, like for COPYING. Please do so before merging this commit, to avoid a 404 error.
Version: unspecified
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=45780