show-branch doc: say <ref>, not <reference>

The glossary defines 'ref' as the official name of the thing,
and the output from "git grep -e '<ref' Documentation/" shows
that most everybody uses <ref>, not <reference>.  In addition,
the page already says <ref> in its SYNOPSIS section for the
command when it is used in the mode to follow the reflogs.

Strictly speaking, many references of these should be updated to
<commit> after adding an explanation on how these <commit>s are
discovered (i.e. we take <rev>, <glob>, or <ref> and starting from
these commits, follow their ancestry or reflog entries to list
commits), but that would be a lot bigger change I would rather not
to do in this patch, whose primary purpose is to make the existing
documentation more consistent.

Signed-off-by: Junio C Hamano <[email protected]>
Signed-off-by: Sean Allred <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: gitster

Documentation/git-show-branch.txt

@@ -74,8 +74,7 @@ OPTIONS
 	that is the common ancestor of all the branches.  This
 	flag tells the command to go <n> more common commits
 	beyond that.  When <n> is negative, display only the
-	<reference>s given, without showing the commit ancestry
-	tree.
+	<ref>s given, without showing the commit ancestry tree.
 
 --list::
 	Synonym to `--more=-1`
@@ -88,8 +87,8 @@ OPTIONS
 	the case of three or more commits.
 
 --independent::
-	Among the <reference>s given, display only the ones that
-	cannot be reached from any other <reference>.
+	Among the <ref>s given, display only the ones that cannot be
+	reached from any other <ref>.
 
 --no-name::
 	Do not show naming strings for each commit.
@@ -132,10 +131,11 @@ are mutually exclusive.
 
 OUTPUT
 ------
-Given N <references>, the first N lines are the one-line
-description from their commit message.  The branch head that is
-pointed at by $GIT_DIR/HEAD is prefixed with an asterisk `*`
-character while other heads are prefixed with a `!` character.
+
+Given N <ref>s, the first N lines are the one-line description from
+their commit message. The branch head that is pointed at by
+$GIT_DIR/HEAD is prefixed with an asterisk `*` character while other
+heads are prefixed with a `!` character.
 
 Following these N lines, one-line log for each commit is
 displayed, indented N places.  If a commit is on the I-th