Fix a stray comma in RepositoryResource.
Fix a stray comma in RepositoryResource.

This comma was accidentally introduced in a recent change to
RepositoryResource, and broke things. It's now removed.

chipx86/reviewboard,custode/reviewboard,KnowNo/reviewboard,1tush/reviewboard,beol/reviewboard,davidt/reviewboard,sgallagher/reviewboard,sgallagher/reviewboard,1tush/reviewboard,bkochendorfer/reviewboard,KnowNo/reviewboard,brennie/reviewboard,KnowNo/reviewboard,brennie/reviewboard,davidt/reviewboard,1tush/reviewboard,chipx86/reviewboard,chipx86/reviewboard,beol/reviewboard,chipx86/reviewboard,davidt/reviewboard,1tush/reviewboard,reviewboard/reviewboard,brennie/reviewboard,beol/reviewboard,bkochendorfer/reviewboard,1tush/reviewboard,custode/reviewboard,1tush/reviewboard,beol/reviewboard,reviewboard/reviewboard,1tush/reviewboard,bkochendorfer/reviewboard,reviewboard/reviewboard,custode/reviewboard,davidt/reviewboard,KnowNo/reviewboard,1tush/reviewboard,bkochendorfer/reviewboard,custode/reviewboard,sgallagher/reviewboard,brennie/reviewboard,reviewboard/reviewboard,sgallagher/reviewboard,1tush/reviewboard