Merge pull request #7824 from geoidesic/geoidesic-extends-exception-p…

…atch-1

Update errors.rst - code shown won't compile

en/development/errors.rst

@@ -447,7 +447,7 @@ provide more context around your errors::
 
  use Cake\Core\Exception\CakeException;
 
- class MissingWidgetException extends Exception
+ class MissingWidgetException extends CakeException
  {
  // Context data is interpolated into this format string.
  protected $_messageTemplate = 'Seems that %s is missing.';