Fix input margin inconsistency

ee/app/views/projects/_merge_request_approvals_settings.html.haml

@@ -70,13 +70,13 @@
   .form-group.reset-approvals-on-push
     .form-check
       = form.check_box :reset_approvals_on_push, class: 'form-check-input'
-      = form.label :reset_approvals_on_push do
+      = form.label :reset_approvals_on_push, class: 'form-check-label' do
         %strong Remove all approvals in a merge request when new commits are pushed to its source branch
 
   .form-group.self-approval
     .form-check
       = form.check_box :merge_requests_author_approval, class: 'form-check-input'
-      = form.label :merge_requests_author_approval do
+      = form.label :merge_requests_author_approval, class: 'form-check-label' do
         %strong Enable self approval of merge requests
         = link_to icon('question-circle'), help_page_path("user/project/merge_requests/merge_request_approvals",
           anchor: 'allowing-merge-request-authors-to-approve-their-own-merge-requests'), target: '_blank'