Merge branch 'ah/doc-pretty-color-auto-prefix' into maint

Doc update. * ah/doc-pretty-color-auto-prefix: doc: clarify syntax for %C(auto,...) in pretty formats

Junio C Hamano committed Jul 10, 2017 at 13:59 UTC 76de71b4879003ce2c2a7f9ac22e059183e00e11

No changes.