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>

diff --git a/Documentation/glossary-content.txt b/Documentation/glossary-content.txt
index f4300684679c7a5ef06ae4cb7be7ff8ee64bb64c..f4fd5b046debb3e2236be4d00fdbb4eea73b7010 100644 (file)
--- a/Documentation/glossary-content.txt
+++ b/Documentation/glossary-content.txt
@@ -170,8 +170,8 @@ to point at the new commit.
        working tree>> is normally derived from the state of the tree
        referred to by HEAD.  HEAD is a reference to one of the
        <<def_head,heads>> in your repository, except when using a
-       <<def_detached_HEAD,detached HEAD>>, in which case it may
-       reference an arbitrary commit.
+       <<def_detached_HEAD,detached HEAD>>, in which case it directly
+       references an arbitrary commit.
 
 [[def_head_ref]]head ref::
        A synonym for <<def_head,head>>.