Fix reference to renamed string.

Change-Id: Ifd863082b382e1f6fbe38735b50a527f1b6f5226
diff --git a/chips/res/layout/copy_chip_dialog_layout.xml b/chips/res/layout/copy_chip_dialog_layout.xml
index d5e072d..f131626 100644
--- a/chips/res/layout/copy_chip_dialog_layout.xml
+++ b/chips/res/layout/copy_chip_dialog_layout.xml
@@ -17,7 +17,7 @@
 <Button xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:text="@string/copy"
+    android:text="@string/copy_email"
     android:id="@+android:id/button1"
     android:background="@null"
-    android:layout_gravity="left"/>
\ No newline at end of file
+    android:layout_gravity="left"/>