Fix review details

- spelling mistake
- unwatch watched setting
- lint (indentation)
- use more performant component

res/css/views/voip/_CallView2.scss

@@ -15,6 +15,8 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+// TODO: Rename on launch: https://github.com/vector-im/riot-web/issues/14231
+
 .mx_CallView2_voice {
     background-color: $accent-color;
     color: $accent-fg-color;