Add spacing below pandemic radar button.

Author: SamuraiKek

Corona-Warn-App/src/main/res/layout/home_statistics_cards_link_card_layout.xml

@@ -81,10 +81,11 @@
             android:layout_marginTop="@dimen/spacing_normal"
             android:layout_marginEnd="@dimen/card_padding"
             android:layout_marginBottom="@dimen/card_padding"
-            app:iconGravity="textStart"
-            app:iconPadding="8dp"
             android:text="@string/pandemic_Radar_card_button_text"
             app:icon="@drawable/ic_link"
+            app:iconGravity="textStart"
+            app:iconPadding="8dp"
+            app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/background_image"