Update the main documentation (stale notes section)

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

Documentation/git.txt

@@ -43,9 +43,10 @@ unreleased) version of git, that is available from 'master'
 branch of the `git.git` repository.
 Documentation for older releases are available here:
 
-* link:v1.5.4/git.html[documentation for release 1.5.4]
+* link:v1.5.4.1/git.html[documentation for release 1.5.4.1]
 
 * release notes for
+  link:RelNotes-1.5.4.1.txt[1.5.4.1],
   link:RelNotes-1.5.4.txt[1.5.4].
 
 * link:v1.5.3.8/git.html[documentation for release 1.5.3.8]