update metadata for the studio landing page cards (for 2.2 content) edit...

update metadata for the studio landing page cards (for 2.2 content) edit landing page banner ("a dozen" --> "20") am: 0e98b64a am: f60f4f0b am: 6e9cbd97
am: b2801116

Change-Id: I664e280e67534dddbd88448c959408016ffbafa9