doc: clarify that pgcrypto's gen_random_uuid calls core func.

Previously it was just marked as a duplicate of the core function.

Reported-by: Andreas Dijkman
Discussion: https://postgr.es/m/17349-24d61e214429e8c1@postgresql.org

Backpatch-through: 13

diff --git a/doc/src/sgml/pgcrypto.sgml b/doc/src/sgml/pgcrypto.sgml
index 79759654a78d9ab947ffe9870954f90de2d16a66..43fb8dbe66617debb594727b6248c428e89dc220 100644 (file)
--- a/doc/src/sgml/pgcrypto.sgml
+++ b/doc/src/sgml/pgcrypto.sgml
@@ -1143,8 +1143,9 @@ gen_random_bytes(count integer) returns bytea
 gen_random_uuid() returns uuid
 </synopsis>
   <para>
-   Returns a version 4 (random) UUID. (Obsolete, this function is now also
-   included in core <productname>PostgreSQL</productname>.)
+   Returns a version 4 (random) UUID. (Obsolete, this function
+   internally calls the <link linkend="functions-uuid">core
+   function</link> of the same name.)
   </para>
  </sect2>