update modal button type for clarity

opentech/apply/funds/templates/funds/includes/table_filter_and_search.html

@@ -13,7 +13,7 @@
                         <button class="button button--action button--change-status" type="submit">Change status</button>
                     </form>
 
-                    <button data-fancybox data-src="#batch-update-reviewers" class="button button--action button--reviewers js-batch-update-reviewers" type="submit">Reviewers</button>
+                    <button data-fancybox data-src="#batch-update-reviewers" class="button button--action button--reviewers js-batch-update-reviewers" type="button">Reviewers</button>
                 </div>
             {% endif %}
         </div>