Merge branch 'as/read-tree-prefix-doc-fix' into maint

Doc update. * as/read-tree-prefix-doc-fix: doc/read-tree: remove obsolete remark

Junio C Hamano committed Feb 15, 2018 at 15:18 UTC d4e528ef6a00b2176e69e426be0da19c86577ffc

No changes.