Aperture: Make gallery button more than squircle

Change-Id: I9f6548ac27db4fe2864c5d71470b00d7be12c741
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 89d54f3..83c365f 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -222,7 +222,7 @@
             android:layout_gravity="center"
             android:background="?attr/selectableItemBackgroundBorderless"
             android:scaleType="fitXY"
-            app:cardCornerRadius="30dp"
+            app:cardCornerRadius="8dp"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintEnd_toStartOf="@+id/shutterButton"
             app:layout_constraintStart_toStartOf="parent"