Fix typo in class name

app/views/projects/edit.html.haml

@@ -39,7 +39,7 @@
       %input{ name: 'update_section', type: 'hidden', value: 'js-merge-request-settings' }
       = render 'projects/merge_request_settings', form: f
       .gl-display-flex.gl-justify-content-end
-        = f.submit _('Save changes'), class: "btn btn-succes qa-save-merge-request-changes rspec-save-merge-request-changes"
+        = f.submit _('Save changes'), class: "btn btn-success qa-save-merge-request-changes rspec-save-merge-request-changes"
 
 = render_if_exists 'projects/merge_request_approvals_settings', expanded: expanded