Merge branch 'ma/filter-branch-doc-caret' into maint

Doc mark-up updates. * ma/filter-branch-doc-caret: git-filter-branch.txt: wrap "maths" notation in backticks

Junio C Hamano committed Feb 14, 2020 at 12:42 UTC 1ea6edfd55c409cc3b7628d75363f73ead666518

No changes.