Adjust Implementation-* manifest entries for BUCK build

Change-Id: I7fb5f0dec5e8f3f56f4ab997a71b2a0bd5288f08

BUCK

diff --git a/BUCK b/BUCK
index aa5978f..b05e695 100644
--- a/BUCK
+++ b/BUCK
@@ -6,7 +6,8 @@
     'Gerrit-Module: com.googlesource.gerrit.plugins.its.phabricator.PhabricatorModule',
     'Gerrit-ReloadMode: reload',
     'Implementation-Title: Plugin its-phabricator',
-    'Implementation-URL: https://www.wikimediafoundation.org',
+    'Implementation-Vendor: Wikimedia Foundation',
+    'Implementation-URL: https://gerrit.googlesource.com/plugins/its-phabricator',
   ],
   deps = [
     ':its-base_stripped',