doc: flatten description of 'matching()' predicate to be formatted well
current description of 'matching()' revset predicate can't be
formatted well on "hg help revset" output.
each descriptions for revset predicates (or something like them) are
split-ed into lines, and spaces on left side of them are stripped
before minirst processing. so, bullet list can't be nested.
this patch just flattens description of 'matching()' predicate to be
formatted well.
Issue351: mq: qrefresh can create extra revlog entry
$ echo "[extensions]" >> $HGRCPATH
$ echo "mq=" >> $HGRCPATH
$ hg init
$ hg qinit
$ echo b > b
$ hg ci -A -m foo
adding b
$ echo cc > b
$ hg qnew -f foo.diff
$ echo b > b
$ hg qrefresh
$ hg debugindex b
rev offset length base linkrev nodeid p1 p2
0 0 3 0 0 1e88685f5dde 000000000000 000000000000