docs classSet semicolons missing

docs/09.3-class-name-manipulation.md

@@ -22,7 +22,7 @@ render: function() {
     classString += ' message-read';
   }
   // 'message message-important message-read'
-  return <div className={classString}>Great, I'll be there.</div>
+  return <div className={classString}>Great, I'll be there.</div>;
 }
 ```
 
@@ -35,9 +35,9 @@ render: function() {
     'message': true,
     'message-important': this.props.isImportant,
     'message-read': this.props.isRead
-  })
+  });
   // same final string, but much cleaner
-  return <div className={classes}>Great, I'll be there.</div>
+  return <div className={classes}>Great, I'll be there.</div>;
 }
 ```