Add docs for scheduler

docs/guide/code/awesome-bot-6/awesome/plugins/scheduler.py

@@ -0,0 +1,16 @@
+from datetime import datetime
+
+import none
+import pytz
+from aiocqhttp.exceptions import Error as CQHttpError
+
+
+@none.scheduler.scheduled_job('cron', hour='*')
+async def _():
+    bot = none.get_bot()
+    now = datetime.now(pytz.timezone('Asia/Shanghai'))
+    try:
+        await bot.send_group_msg(group_id=672076603,
+                                 message=f'现在{now.hour}点整啦！')
+    except CQHttpError:
+        pass