Fix a couple of typos in 9.2 release notes.

Thom Brown

Author: hlinnaka

doc/src/sgml/release-9.2.sgml

@@ -1169,7 +1169,7 @@
 
       <listitem>
        <para>
-        Cancel queries if clients get disconnected (Florian Pflug Greg
+        Cancel queries if clients get disconnected (Florian Pflug, Greg
         Jaskiewicz)
        </para>
       </listitem>
@@ -2618,7 +2618,7 @@
 
       <listitem>
        <para>
-        Add new <link linkend="pgbench">pgbench</link> switchs
+        Add new <link linkend="pgbench">pgbench</link> switches
         <option>--unlogged-tables</>, <option>--tablespace</>, and
         <option>--index-tablespace</> (Robert Haas)
        </para>