Refer to license in Emacs manual.

doc/misc/epa.texi

@@ -16,8 +16,13 @@ Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.2 or
 any later version published by the Free Software Foundation; with no
 Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
-Texts.  A copy of the license is included in the section entitled "GNU
-Free Documentation License".
+Texts.  A copy of the license is included in the section entitled ``GNU
+Free Documentation License'' in the Emacs manual.
+
+This document is part of a collection distributed under the GNU Free
+Documentation License.  If you want to distribute this document
+separately from the collection, you can do so by adding a copy of the
+license to the document, as described in section 6 of the license.
 @end quotation
 @end copying