Update tr.toml

[akifmt]

Translated new words and minor wording improvements.

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[chalin]

Hi, and thanks for the updates.

Codex has this feedback to offer:

• community_how_to now reads as a complete sentence, but the template immediately appends the “Contribution Guidelines” link, so the rendered Turkish becomes awkward: “… sayfamızda bulabilirsiniz Katkı Yönergeleri.” Consider ending with a connector/colon to flow into the link. tr.toml (line 77), community_links.html (line 19)
• post_posts_in becomes “Şuradaki gönderiler”, which doesn’t combine cleanly with the appended category key ({{ .Key }}) and reads unnatural as “Şuradaki gönderiler News”. Consider a form that expects the category after it (e.g., “{{ .Key }} gönderileri” or “Gönderiler:”). tr.toml (line 47), list.html (line 17)

Can you address these concerns?