Invalid SSL certificate for the Polish version

[pfcode]

The polish version, which is available at https://pl.phptherightway.com/, has an invalid SSL certificate. It seems that the default GitHub cert is used instead of a customized one for the domain.

Also, this translation seems to be pretty outdated - the last change was made in Jan 2017.

[matthewtrask]

to the second issue, we are happy to accept updated translations provided we can find someone to verify the translations. I dont know if anyone involved with the project speaks Polish though.

[petk]

For the SSL certificate to be automatically regenerated by GitHub, I think that some commit needs to be send to the repo.