Fix mention of htup.h in storage.sgml

MasaoFujii · MasaoFujii · commit 5091f39afe7f · 2015-10-01T23:13:20.000+09:00
Previously it was documented that the details on HeapTupleHeaderData
struct could be found in htup.h. This is not correct because it's now
defined in htup_details.h.

Back-patch to 9.3 where the definition of HeapTupleHeaderData struct
was moved from htup.h to htup_details.h.

Michael Paquier
diff --git a/doc/src/sgml/storage.sgml b/doc/src/sgml/storage.sgml
@@ -878,7 +878,7 @@ data. Empty in ordinary tables.</entry>
 
  <para>
    All the details can be found in
-   <filename>src/include/access/htup.h</filename>.
+   <filename>src/include/access/htup_details.h</filename>.
  </para>
 
  <para>
