code clean

examples/busy-bot.ts

@@ -17,6 +17,8 @@
  *   limitations under the License.
  *
  */
+import { generate } from 'qrcode-terminal'
+
 import {
   IoClient,
   Wechaty,
@@ -24,9 +26,6 @@ import {
   log,
 }             from '../src/'
 
-
-import { generate } from 'qrcode-terminal'
-
 console.log(`
 =============== Powered by Wechaty ===============
 -------- https://github.com/Chatie/wechaty --------