Documentation/git.txt: link to 1.5.5.2 documentation.

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

Documentation/git.txt

@@ -46,10 +46,11 @@ Documentation for older releases are available here:
 * link:v1.5.5/git.html[documentation for release 1.5.5]
 
 * release notes for
+  link:RelNotes-1.5.5.2.txt[1.5.5.2],
   link:RelNotes-1.5.5.1.txt[1.5.5.1],
   link:RelNotes-1.5.5.txt[1.5.5].
 
-* link:v1.5.5.1/git.html[documentation for release 1.5.5.1]
+* link:v1.5.5.2/git.html[documentation for release 1.5.5.2]
 
 * link:v1.5.4.5/git.html[documentation for release 1.5.4.5]