Make change for Roborazzi

Author: david-allison

AnkiDroid/src/main/res/layout/fragment_reviewer.xml

@@ -13,6 +13,7 @@
 
     <LinearLayout
         android:id="@+id/main_layout"
+        android:background="@color/flag_pink"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:orientation="vertical"