small fixes for czech language

[ondraczsk]

mistakes

DO NOT REMOVE THIS

Please make sure your pull request complies with these guidelines:

• • [] Use same formatting
• • [ ] Must test on PMMP
• • [ ] PLEASE don't use the GitHub Web Editor
• • [ ] Have a detailed title like "Fix players are being kicked randomly"

If you are translating, make sure you translation complies with these guidelines:

• • [ ] File must be named lang_iso. ISO Codes for languages can be found here.
• • [ ] PLEASE don't use Google Translate (or any other translators...)
• • [ ] Translate messages but keep tags like {player} or {pin} the same
• • [ ] Make a Pull Request named Translation for Language after you're finished

What does the PR change?

fix mistakes

Extra Information

no