Fix <literal> closing tag

Fixes b101dd2

Author: jmikola

reference/mongodb/mongodb/driver/manager/construct.xml

@@ -51,7 +51,7 @@ mongodb://[username:password@]host1[:port1][,host2[:port2],...[,hostN[:portN]]][
       </programlisting>
      </para>
      <para>
-      Defaults to <literal>"mongodb://127.0.0.1:27017"<literal> if unspecified.
+      Defaults to <literal>"mongodb://127.0.0.1:27017"</literal> if unspecified.
      </para>
      <para>
       For details on supported URI options, see