Update examples for send_media_group.py (pyrogram#481)

InputMediaPhoto and InputMediaVideo are under pyrogram.types

Author: MaheshMahi19

pyrogram/methods/messages/send_media_group.py

@@ -62,7 +62,7 @@ async def send_media_group(
  Example:
  .. code-block:: python
 
- from pyrogram import InputMediaPhoto, InputMediaVideo
+ from pyrogram.types import InputMediaPhoto, InputMediaVideo
 
  app.send_media_group(
  "me",