DOC: removed 9.6-specific references for pgpro_upgrade

Author: Liudmila Mantrova

doc/src/sgml/release-pro-9.6.sgml

@@ -69,7 +69,7 @@
       based on the same <productname>PostgreSQL</productname> major release,
       a dump/restore is not required. If you are upgrading from
       <productname>Postgres Pro Standard</productname> 9.6.7.1 or
-      lower, you must also use the <xref linkend="pgproupgrade"> script provided
+      lower, you must also use the <filename>pgpro_upgrade</filename> script provided
       in this distribution. This script updates metadata information to handle
       catalog number format change introduced after 
       <productname>Postgres Pro Standard</productname> 9.6.4.1, as well as
@@ -85,7 +85,7 @@
       you must stop postgres service.
       The script must be run on behalf of the user owning the database
       (typically postgres). Running <literal>pgpro_upgrade</literal>
-      as root will result in an error. For details, see <xref linkend="pgproupgrade">.
+      as root will result in an error.
         </para>
       </important>
       <para>If you have compiled <productname>Postgres Pro</productname>