Update gerrit location in manifest and docs

Change-Id: Ic26237e67cea5a4054e610fd9fd4d0ef37319a73
diff --git a/default.xml b/default.xml
index 1972f22..b1b5663 100644
--- a/default.xml
+++ b/default.xml
@@ -6,7 +6,7 @@
 
   <remote  name="github"
            fetch=".."
-           review="review.cyanogenmod.com" />
+           review="review.cyanogenmod.org" />
 
   <remote  name="private"
            fetch="ssh://git@github.com" />