Fix linter errors

app/src/components/Demo/index.tsx

@@ -1,6 +1,6 @@
 import * as React from 'react'
 import ShowText from './ShowText'
-import Mouse from './Mouse';
+import Mouse from './Mouse'
 
 (window as any).demo = {}
 
@@ -11,4 +11,4 @@ export default function render(props: any) {
       <Mouse />
     </span>
   )
-}
+}