ZF-10658: fix doc typo

- s/worful/wurfl/

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@23301 44c647ce-9c0f-0410-b52a-842ac1e357ba

documentation/manual/en/module_specs/Zend_Http_UserAgent.xml

@@ -154,7 +154,7 @@ library
 
         <programlisting language="sh"><![CDATA[
 mkdir -p data/wurfl/cache
-chmod -R o+rwX data/worful/cache
+chmod -R o+rwX data/wurfl/cache
 ]]></programlisting>
 
         <para>