Extra line to bootstrap 3 horizontal layout

This file ends with no newline character. It won't render properly on a terminal, and it's considered a bad practice.

Author: okorneliuk

Resources/views/Form/bootstrap_3_horizontal_layout.html.twig

@@ -62,4 +62,4 @@ col-sm-10
             {{- form_errors(form) -}}
         </div>{#--#}
     </div>
-{%- endblock checkbox_row %}
+{%- endblock checkbox_row %}