Add missing quote in find/sed listing

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@15301 44c647ce-9c0f-0410-b52a-842ac1e357ba

documentation/manual/en/ref/performance-classloading.xml

@@ -214,7 +214,7 @@ set_include_path(implode(PATH_SEPARATOR, $paths));
 
             <programlisting role="shell"><![CDATA[
 % cd path/to/ZendFramework/library
-% find . -name '*.php' -not -wholename '*/Loader/Autoloader.php -print0 | \
+% find . -name '*.php' -not -wholename '*/Loader/Autoloader.php' -print0 | \
   xargs -0 sed --regexp-extended --in-place 's/(require_once)/\/\/ \1/g'
 ]]></programlisting>