Add whitespace to code for consistency

It’s harder to scan over all the different possible errors if some of
them are bunched up together with no line breaks between them.

app/templates/views/check/column-errors.html

@@ -75,14 +75,18 @@
         </p>
 
       {% elif not recipients.allowed_to_send_to %}
+
         {% with
           count_of_recipients=count_of_recipients,
           template_type_label=recipients.recipient_column_headers[0]
         %}
           {% include "partials/check/not-allowed-to-send-to.html" %}
         {% endwith %}
+
       {% elif recipients.more_rows_than_can_send %}
+
         {% include "partials/check/too-many-messages.html" %}
+
       {% endif %}
 
       {{ skip_to_file_contents() }}