Fix onboarding not being completable with large fontsizes

Author: d4rken

app/src/main/res/layout/onboarding_fragment.xml

@@ -84,6 +84,7 @@
             android:layout_height="wrap_content"
             android:layout_marginHorizontal="32dp"
             android:layout_marginTop="32dp"
+            android:layout_marginBottom="64dp"
             android:text="@string/general_continue_action"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintEnd_toEndOf="parent"