Merge branch 'en/rebase-doc-hooks-called-by-accident'

"git rebase" happens to call some hooks meant for "checkout" and
"commit" by this was not a designed behaviour than historical
accident.  This has been documented.

* en/rebase-doc-hooks-called-by-accident:
  git-rebase.txt: add another hook to the hooks section, and explain more

diff --cc Documentation/git-rebase.txt
Simple merge