Fixed ZF-6998 : little PHPDoc typos in some classes

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@16028 44c647ce-9c0f-0410-b52a-842ac1e357ba

library/Zend/Db/Adapter/Abstract.php

@@ -1064,7 +1064,7 @@ abstract class Zend_Db_Adapter_Abstract
      * can invoke it.
      *
      * @param string $key
-     * @returns string
+     * @return string
      */
     public function foldCase($key)
     {

library/Zend/Loader/Autoloader.php

@@ -197,7 +197,7 @@ class Zend_Loader_Autoloader
     /**
      * Register a namespace to autoload
      * 
-     * @param  string $namespace 
+     * @param  string|array $namespace 
      * @return Zend_Loader_Autoloader
      */
     public function registerNamespace($namespace)
@@ -219,7 +219,7 @@ class Zend_Loader_Autoloader
     /**
      * Unload a registered autoload namespace
      * 
-     * @param  string $namespace 
+     * @param  string|array $namespace 
      * @return Zend_Loader_Autoloader
      */
     public function unregisterNamespace($namespace)