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
am: d4a5148d

Change-Id: I1c46898205b1475c8b77adaaa32a9e41e2923cef