appview/repo/ogcard: set default size to recommended 1200x630

Signed-off-by: Anirudh Oppiliappan <[e-mail]>

appview/repo/ogcard/card.go

···
 
 // DefaultSize returns the default size for a card
 func DefaultSize() (int, int) {
-	return 1200, 600
+	return 1200, 630
 }
 
 // NewCard creates a new card with the given dimensions in pixels