Merge pull request #309 from edx/will/grading-page-wording

Update wording on grade complete page

apps/openassessment/templates/openassessmentblock/grade/oa_grade_complete.html

@@ -147,7 +147,7 @@
                             <li class="question question--feedback ui-toggle-visibility">
                                 <h4 class="question__title ui-toggle-visibility__control">
                                     <i class="ico icon-caret-right"></i>
-                                    <span class="question__title__copy">{% trans "Additional feedback on your response" %}</span>
+                                    <span class="question__title__copy">{% trans "Additional comments on your response" %}</span>
                                 </h4>
 
                                 <ul class="question__answers ui-toggle-visibility__content">