#rtd: Tells the user to please read the docs.

async def handler(event):
    """#rtd: Tells the user to please read the docs."""
    rtd = RTFD if event.pattern_match.group(1) else RTD
    await asyncio.wait([
        event.delete(),
        event.respond(rtd, reply_to=event.reply_to_msg_id)
    ])