Add mention of win32ver.rc for update for minor release.

Author: bmomjian

src/tools/RELEASE_CHANGES

@@ -5,7 +5,7 @@
       o src/interfaces/*/Makefile
       o src/interfaces/libpq/libpq.rc (update for minor release)
       o src/include/pg_config.h.win32 (update for minor release)
-      o port/win32ver.rc
+      o port/win32ver.rc (update for minor release)
 
 * Release notes
     update doc/src/sgml/release.sgml and generate HISTORY