glossary: clarify description of HEAD

HEAD on a branch does reference a commit via the branch ref it refers to. The main difference of a detached HEAD is that it _directly_ refers to a commit. Clarify this. Signed-off-by: Junio C Hamano <gitster@pobox.com>

Junio C Hamano committed Jun 23, 2011 at 09:48 UTC 67393c5dc99eb61e76d2ea4df3dae49e8e93828d
1 file changed +2 -2
Documentation/glossary-content.txt
+2 -2
@@ -170,8 +170,8 @@ to point at the new commit.
170 working tree>> is normally derived from the state of the tree
171 referred to by HEAD. HEAD is a reference to one of the
172 <<def_head,heads>> in your repository, except when using a
173 - <<def_detached_HEAD,detached HEAD>>, in which case it may
174 - reference an arbitrary commit.
173 + <<def_detached_HEAD,detached HEAD>>, in which case it directly
174 + references an arbitrary commit.
175
176 [[def_head_ref]]head ref::
177 A synonym for <<def_head,head>>.