Documentation/git-range-diff: add missing notes options in synopsis

git-range-diff supports note options which are also mentioned later in
the help, but they are missing from the synopsis. Let's fix that.

Signed-off-by: Siddh Raman Pant <siddh.raman.pant@oracle.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-range-diff.adoc

@@ -11,7 +11,7 @@ SYNOPSIS
 'git range-diff' [--color=[<when>]] [--no-color] [<diff-options>]
 	[--no-dual-color] [--creation-factor=<factor>]
 	[--left-only | --right-only] [--diff-merges=<format>]
-	[--remerge-diff]
+	[--remerge-diff] [--no-notes | --notes[=<ref>]]
 	( <range1> <range2> | <rev1>...<rev2> | <base> <rev1> <rev2> )
 	[[--] <path>...]