Fixes DocBlocks in Zend_Captcha_Word

library/Zend/Captcha/Word.php

@@ -187,7 +187,7 @@ abstract class Zend_Captcha_Word extends Zend_Captcha_Base
      * Set captcha identifier
      *
      * @param string $id
-     * return Zend_Captcha_Word
+     * @return Zend_Captcha_Word
      */
     protected function _setId ($id)
     {
@@ -366,7 +366,8 @@ abstract class Zend_Captcha_Word extends Zend_Captcha_Base
      * Validate the word
      *
      * @see    Zend_Validate_Interface::isValid()
-     * @param  mixed $value
+     * @param  mixed      $value
+     * @param  array|null $context
      * @return boolean
      */
     public function isValid($value, $context = null)