Include missing phrase from copyright
diff --git a/MagickCore/gem-private.h b/MagickCore/gem-private.h
index 3f7aa28..fa7bd12 100644
--- a/MagickCore/gem-private.h
+++ b/MagickCore/gem-private.h
@@ -2,7 +2,7 @@
   Copyright 1999-2019 ImageMagick Studio LLC, a non-profit organization
   dedicated to making software imaging solutions freely available.
   
-  You may not use this file except in compliance with the License.
+  You may not use this file except in compliance with the License.  You may
   obtain a copy of the License at
   
     https://imagemagick.org/script/license.php