title: (Discord.py) Send a message to all guilds
body: <p>I've been trying to send the same message to all the guilds where my bot is, but nothing has worked and I haven't been able to find something similar in the docs. Is this posible? How can I do It?</p>
  
  <p>Edit: ok, lets's imagine that what my bot does is checking a news webpage like BBC or any other. The bot would be checking the web every five minutes and sending links of the news to those guilds where .start (for example) was executed. The way I've implemented this, was by a command that generates a single loop for each guild, the idea was to have just one loop for every guild.</p>