Update outdated docs/tr/README.md with some fixes.

[hasansezertasan]

All Submissions:

• Have you followed the guidelines stated in CONTRIBUTING.md file?
• Have you checked to ensure there aren't any other open Pull Requests for the desired changed?

[alperiox]

Onceki versiyon makine cevirisi gibi gozukuyor acikcasi, su anki hali daha yerel ve anlasilir duruyor.

The previous version seems like a machine translation, to be honest. Currently, it seems more localized and clear.

[picklelo]

thanks for updating!