Обновление strings.md

[defuz]

До текущего состояния мастера. Включая фикс #310.

[mkpankov]

Reviewed 1 of 1 files at r1. Review status: all files reviewed at latest revision, 1 unresolved discussion.

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_src/strings.md, line 20 [r1] (raw file):_ Я думаю, здесь "greeting" ссылается на название переменной. Это просто указание типа

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_Comments from the review on Reviewable.io_

[defuz]

Review status: 0 of 1 files reviewed at latest revision, 1 unresolved discussion.

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_src/strings.md, line 20 [r1] (raw file):_ Fixed

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_Comments from the review on Reviewable.io_

[mkpankov]

Reviewed 1 of 1 files at r2. Review status: all files reviewed at latest revision, all discussions resolved.

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_Comments from the review on Reviewable.io_