Documentation/git.txt: update links to release notes

Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Documentation/git.txt

@@ -43,7 +43,12 @@ unreleased) version of git, that is available from 'master'
 branch of the `git.git` repository.
 Documentation for older releases are available here:
 
-* link:v1.6.3/git.html[documentation for release 1.6.3]
+* link:v1.6.3.2/git.html[documentation for release 1.6.3.2]
+
+* release notes for
+  link:RelNotes-1.6.3.2.txt[1.6.3.2],
+  link:RelNotes-1.6.3.1.txt[1.6.3.1],
+  link:RelNotes-1.6.3.txt[1.6.3].
 
 * release notes for
   link:RelNotes-1.6.2.5.txt[1.6.2.5],