Update theme.yml

_data/theme.yml

@@ -9,7 +9,7 @@
 # featured image is used in home page banner and in meta markup to represent the collection
 # use either an objectid (from an item in this collect), a relative location of an image in this repo (ex. /assets/img/feature.jpg), or a full url to an image elsewhere
 # Header image front-page
-featured-image: coll0022
+featured-image: coll022
 # optional: add extra padding around collection title for a larger image feature. 
 home-title-y-padding: 10em # Default is 8em
 # optional: change position of background image, center, top, bottom