Fix RTL alignment issue in the "How it works" page of Contactless
payment settings

Bug: 156717675
Screenshot: https://screenshot.googleplex.com/RpqdmjhmTaP.png
Test: make -j42 RunSettingsRoboTests
Change-Id: I12064adb2c510d281358f22e6ee1de9682079fcd
diff --git a/res/layout/nfc_payment_how_it_works.xml b/res/layout/nfc_payment_how_it_works.xml
index 87a0095..230a28b 100644
--- a/res/layout/nfc_payment_how_it_works.xml
+++ b/res/layout/nfc_payment_how_it_works.xml
@@ -69,10 +69,10 @@
           <Button
               android:id="@+id/nfc_how_it_works_button"
               android:background="?android:attr/selectableItemBackground"
-              android:layout_alignParentRight="true"
+              android:layout_alignParentEnd="true"
               android:layout_width="wrap_content"
               android:layout_height="48dp"
-              android:layout_marginRight="20dp"
+              android:layout_marginEnd="20dp"
               android:text="@string/nfc_how_it_works_got_it"
               android:textSize="14sp"
               android:textColor="#263238"