Joey is partially right: You used a Windows specific app to modify/update your crontab. And Windows isn’t really compatible with *nix systems.
But…
The error reported sounds more like your crontab see a blank like a End of Line.
So…
In addition of removing those /r, I would suggest you to put your cmd in quotes like so:
* * * * * php "/var/www/html/bin/console mautic:segment:update"