Disallow invalid inline style comments in stylesheets (#9099)

res/css/views/elements/_RoomAliasField.pcss

@@ -15,8 +15,8 @@ limitations under the License.
 */
 
 .mx_RoomAliasField {
-    // if parent is a flex container, this allows the
-    // width to be as wide as needed, and not 100%
+    /* if parent is a flex container, this allows the */
+    /* width to be as wide as needed, and not 100% */
     flex: 0 1 auto;
     display: flex;
     align-items: stretch;
@@ -47,10 +47,10 @@ limitations under the License.
         text-overflow: ellipsis;
         white-space: nowrap;
         overflow: hidden;
-        // this allows the domain name to show
-        // as long as it doesn't make the input shrink
-        // if it's too big, it shows an ellipsis
-        // 180: 28 for prefix, 152 for input
+        /* this allows the domain name to show */
+        /* as long as it doesn't make the input shrink */
+        /* if it's too big, it shows an ellipsis */
+        /* 180: 28 for prefix, 152 for input */
         max-width: calc(100% - 180px);
     }
 }