Outdated wiki & errors in it

[mymmrac]

Standalone Reply - missing semicolon at return and deprecated method Reply.of(action, Flag.PHOTO) ...

Usage and Complete Example - same deprecated method

Complete Example, More Complex States and Inline Declaration - deprecated method .action(upd -> ...

Ability Reply - using deprecated method .reply(upd -> { ...

Testing Your Bot - missing description about /stats commands

Probably some else, but I found this.

[rubenlagus]

@mymmrac Pull request with the fixes more than welcome