fix button positioning

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

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

@@ -55,6 +55,7 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_marginTop="@dimen/standard_margin"
+        android:layout_marginEnd="4dp"
         android:gravity="end">
 
         <com.google.android.material.button.MaterialButton