Merge pull request #853 from RazvanBugoi/master

Added missing semicolon

Author: iliakan

1-js/02-first-steps/13-switch/article.md

@@ -163,7 +163,7 @@ switch (arg) {
     alert( 'Never executes!' );
     break;
   default:
-    alert( 'An unknown value' )
+    alert( 'An unknown value' );
 }
 ```