Fix small typo in heading

Make non-compliance hyphenated.

cla_public/templates/accessibility-statement.html

@@ -66,7 +66,7 @@ <h2 class="govuk-heading-m">{{ _('Non-accessible content') }}</h2>
     {% trans %}The content listed below is non-accessible for the following reasons.{% endtrans %}
   </p>
 
-  <h3 class="govuk-heading-m">{{ _('Non compliance with the accessibility regulations') }}</h3>
+  <h3 class="govuk-heading-m">{{ _('Non-compliance with the accessibility regulations') }}</h3>
 
   <h4 class="govuk-heading-m">{{ _('Time-out') }}</h4>
   <p class="govuk-body">{% trans %}Users are not able to turn off, adjust or extend the time in which inactivity will result in a loss of data. This fails WCAG 2.1 2.2.1 A (Timing Adjustable).{% endtrans %}