Use correct parameter name for view_option_value

The documentation for ALTER VIEW had a minor copy-and-paste error in
defining the parameters.  Noticed when reviewing the WITH CHECK OPTION
patch.

Backpatch to 9.2 where this was first introduced.

Author: sfrost

doc/src/sgml/ref/alter_view.sgml

@@ -126,7 +126,7 @@ ALTER VIEW [ IF EXISTS ] <replaceable class="parameter">name</replaceable> RESET
    </varlistentry>
 
    <varlistentry>
-    <term><replaceable class="parameter">view_option_name</replaceable></term>
+    <term><replaceable class="parameter">view_option_value</replaceable></term>
     <listitem>
      <para>
       The new value for a view option.