Updating text and voice channel types to support DJSv13

[LeventHAN]

Please describe the changes this pull request makes and why it should be merged: So first things first, I don't know why the emoji discord links did show up here once again, you did approve it but they still appear here... Bug? However let's move to the real change:

channel types don't give text and voice anymore... They give GUILD_TEXT and GUILD_VOICE... Here is proof for text:

Here is proof for voice: