Merge pull request #3932 from matrix-org/dbkr/reenable_stylelint

Re-enable stylelint on CI

.buildkite/pipeline.yaml

@@ -25,6 +25,14 @@ steps:
     plugins:
       - docker#v3.0.1:
           image: "node:12"
+  - label: ":stylelint: Style Lint"
+    command:
+      - "echo '--- Install'"
+      - "yarn install --ignore-scripts"
+      - "yarn lint:style"
+    plugins:
+      - docker#v3.0.1:
+          image: "node:12"
 
   - label: ":jest: Tests"
     agents:

res/css/views/rooms/_RoomHeader.scss

@@ -24,7 +24,7 @@ limitations under the License.
         bottom: -1px;
         right: -2px;
         height: 10px;
-        width: 10px
+        width: 10px;
     }
 }