Add missing function comment

exceptions/MDJailSecurityOptionNotSetException.php

@@ -5,7 +5,6 @@
  * Exception thrown by MDJail if a required security option has not been set.
  */
 final class MDJailSecurityOptionNotSetException extends Exception {
-
     /**
      * Error message.
      *
@@ -17,5 +16,4 @@ public function errorMessage() {
         return $errorMsg;
 
     }
-
 }