Merge branch 'ds/gc-doc-typofix'

Typofix. * ds/gc-doc-typofix: git-gc.txt: fix typo about gc.writeCommitGraph

Junio C Hamano committed Jan 18, 2019 at 13:49 UTC e07074d3f0f0efcb6cef30dc603d75c595942431

No changes.