Add Turkish, Türkçe, ISO 639-1 Code: tr

[SergeCroise]

• update crowdin.yml (done)
• grant access to tr in Crowdin (translator and proofreader)
• update mkdocs.yml (done)
• translate e.g.: https://crowdin.com/editor/rockydocs/672/en-tr

see also https://crowdin.com/project/rockydocs

[SergeCroise]

Pull requests:

1. the filter in crowdin.yml: #1748
2. the combobox in mkdocs.yml : rocky-linux/docs.rockylinux.org#66

[SergeCroise]

Links to translate (examples):
https://crowdin.com/editor/rockydocs/523/en-tr
https://crowdin.com/editor/rockydocs/672/en-tr
https://crowdin.com/editor/rockydocs/668/en-tr

[sspencerwire]

@SergeCroise Can this issue be closed, or does more need to be done?

[SergeCroise]

@SergeCroise Can this issue be closed, or does more need to be done?

can be closed.