[tz] Wrong spelling of a city in a timezone name

[Florian Weimer]

* Igor via tz:

> Hello. Currently, in your timezone files Ukrainian capital is spelled
> incorrectly. Kyiv is the correct spelling as decided by UNCSGN (United
> Nations Conferences on the Standardization of Geographical Names) and
> UNGEGN (United Nations Group of Experts on Geographical Names)."Kiev"
> is transliteration from Russian and as Ukraine, which is an
> independent country, has only one official language, which is
> Ukrainian, using transliteration from Russian is offending and
> incorrect.

This comes up every now and then.  English texts usually do not use
Cyrillic names in current transliterations, e.g.:

| Ilham Aliyev expressed gratitude to the Head of the Ukrainian State
| for creating favorable conditions for the opening of the Trade House
| of Azerbaijan in Kiev.

<https://www.president.gov.ua/en/news/prezidenti-ukrayini-ta-azerbajdzhanskoyi-respubliki-vidznach-48122>

It's similar with Moscow, it's not written as Moskvá in English.

Thanks,
Florian