Fix github links in the single-backend case.
Fix github links in the single-backend case.

paulproteus/livegrep,lekkas/livegrep,paulproteus/livegrep,lekkas/livegrep,wfxiang08/livegrep,lekkas/livegrep,wfxiang08/livegrep,wfxiang08/livegrep,paulproteus/livegrep,paulproteus/livegrep,lekkas/livegrep,lekkas/livegrep,wfxiang08/livegrep,wfxiang08/livegrep,lekkas/livegrep,paulproteus/livegrep,wfxiang08/livegrep,paulproteus/livegrep