Use public site URL in README

Change-Id: Ia1fd78ede91c8fae2985082909ae845772afe203

README.md

diff --git a/README.md b/README.md
index f226bbf..bb1c499 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,3 @@
-[Homepage][home] for [Gerrit Code Review][gerrit].
+Homepage for [Gerrit Code Review][home].
 
-[home]: https://gerrit.googlesource.com/homepage/+doc/HEAD/
-[gerrit]: https://gerrit.googlesource.com/gerrit/
+[home]: https://www.gerritcodereview.com/