Disallow invalid inline style comments in stylesheets (#9099)

res/css/views/dialogs/_RoomSettingsDialog.pcss

@@ -14,8 +14,8 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// ICONS
-// ==========================================================
+/* ICONS */
+/* ========================================================== */
 
 .mx_RoomSettingsDialog_settingsIcon::before {
     mask-image: url('$(res)/img/element-icons/settings.svg');
@@ -34,7 +34,7 @@ limitations under the License.
 }
 
 .mx_RoomSettingsDialog_bridgesIcon::before {
-    // This icon is pants, please improve :)
+    /* This icon is pants, please improve :) */
     mask-image: url('$(res)/img/feather-customised/bridge.svg');
 }
 
@@ -51,7 +51,7 @@ limitations under the License.
     padding-right: 80px;
 }
 
-// show a different AvatarSetting placeholder for RoomProfileSettings which is basically a clone of ProfileSettings
+/* show a different AvatarSetting placeholder for RoomProfileSettings which is basically a clone of ProfileSettings */
 .mx_RoomSettingsDialog .mx_AvatarSetting_avatar .mx_AvatarSetting_avatarPlaceholder::before {
     mask: url("$(res)/img/feather-customised/image.svg");
     mask-repeat: no-repeat;