Merge pull request #17363 from edx/tasawer/learner-3962/translate-contact-us-form

translate string on support form

lms/djangoapps/support/static/support/jsx/single_support_form.jsx

@@ -152,7 +152,7 @@ class RenderForm extends React.Component {
             <a
               href={this.props.context.marketingUrl}
               className="btn btn-secondary help-button"
-            >{`Search the ${this.props.context.platformName} Help Center`}</a>
+            >{gettext(`Search the ${this.props.context.platformName} Help Center`)}</a>
           </div>
         </div>