Updated Permission (markdown)

Permission.md

@@ -9,6 +9,8 @@ getPermission(user_id: string, guild_id: string, channel_id?: string): Promise<P
 ### Example
 ```ts
 const perms = await getPermission(req.userid, guild_id);
+perms.hasThrow("MANAGE_GUILD") // will throw an error if the users lacks the permission
+
 if (perms.has("MANAGE_GUILD")) {
     ...
 }