Fix missing semicolon in CSS for change list star position

Change-Id: Idf72d73cccfafe8577c75d39625344dbe912ad0a
diff --git a/polygerrit-ui/app/styles/gr-change-list-styles.html b/polygerrit-ui/app/styles/gr-change-list-styles.html
index 982ef85..0cce6fb 100644
--- a/polygerrit-ui/app/styles/gr-change-list-styles.html
+++ b/polygerrit-ui/app/styles/gr-change-list-styles.html
@@ -101,7 +101,7 @@
         }
         .star {
           align-items: flex-start;
-          padding-left: .35em
+          padding-left: .35em;
           padding-top: .4em;
         }
         .subject {