Fix wrong triggering of commands when tgcf is deployed as user bot in live mode.
Like there is a command `start`, and it is expected that `.start` would trigger the command. But any character followed by the word `start` was triggering. This is because the telethon uses regex. Now this is solved by escaping the dot `\.` in commit abdb9bcc6fd653ac5d4b7a66a0b3ca20f5504789.
Thanks to Cryptotion for bringing this under my notice.