Fixed doc.

framework/yii/YiiBase.php

@@ -343,7 +343,6 @@ class YiiBase
 	 *
 	 * @param string $className the fully qualified class name without leading \
 	 * @return boolean whether the class has been loaded successfully
-	 * @throws InvalidConfigException if the class file does not exist
 	 * @throws UnknownClassException if the class does not exist in the class file
 	 */
 	public static function autoload($className)

framework/yii/debug/Panel.php

@@ -11,8 +11,8 @@ use Yii;
 use yii\base\Component;
 
 /**
- * Panel is a base class for debugger panel. It defines how data should be collected,
+ * Panel is a base class for debugger panel classes. It defines how data should be collected,
- * what should be dispalyed at debug toolbar and on debugger details view.
+ * what should be displayed at debug toolbar and on debugger details view.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0