hooklib: update documentation of changeset_obsoletedfor for changed hook type
This updates usage example of changeset_obsoleted to reflect the move from
pretxnclose to txnclose made in
04ef381000a8 (hooklib: fix detection of
successors for changeset_obsoleted).
Differential Revision: https://phab.mercurial-scm.org/D8929
#require clang-format test-repo
$ . "$TESTDIR/helpers-testrepo.sh"
$ cd "$TESTDIR"/..
$ for f in `testrepohg files 'set:(**.c or **.cc or **.h) and not "listfile:contrib/clang-format-ignorelist"'` ; do
> clang-format --style file $f > $f.formatted
> cmp $f $f.formatted || diff -u $f $f.formatted
> rm $f.formatted
> done