Fix mobile_search udf (#4692)

sql/mozfun/mobile_search/normalize_app_name/udf.sql

@@ -49,9 +49,9 @@ AS
 SELECT
   assert.equals(
     STRUCT('Firefox' AS normalized_app_name, 'Firefox Android' AS normalized_app_name_os),
-    normalize_app_name('Fenix', 'Android')
+    mobile_search.normalize_app_name('Fenix', 'Android')
   ),
   assert.equals(
     STRUCT('Firefox Lite' AS normalized_app_name, 'Firefox Lite Android' AS normalized_app_name_os),
-    normalize_app_name('Zerda', 'Android')
+    mobile_search.normalize_app_name('Zerda', 'Android')
   ),;