Update release notes

As 1.7.4.3 has backmerged a handful of fixes from the master,
drop these entries from 1.7.5 release notes.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/Documentation/git.txt b/Documentation/git.txt
index 5e57f69..78499db 100644
--- a/Documentation/git.txt
+++ b/Documentation/git.txt
@@ -44,9 +44,11 @@
 branch of the `git.git` repository.
 Documentation for older releases are available here:
 
-* link:v1.7.4.1/git.html[documentation for release 1.7.4.1]
+* link:v1.7.4.3/git.html[documentation for release 1.7.4.3]
 
 * release notes for
+  link:RelNotes/1.7.4.3.txt[1.7.4.3],
+  link:RelNotes/1.7.4.2.txt[1.7.4.2],
   link:RelNotes/1.7.4.1.txt[1.7.4.1],
   link:RelNotes/1.7.4.txt[1.7.4].