Added the note about the limit on total size of a single row

[zinal]

Changelog entry

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Changelog category

• Documentation (changelog entry is not required)

Description for reviewers

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[github-actions]

🟢 2025-06-23 09:41:38 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-06-23 09:46:06 UTC Pre-commit check linux-x86_64-relwithdebinfo for 0cc1ded has started.
⚪ 2025-06-23 09:46:10 UTC Artifacts will be uploaded here
⚪ 2025-06-23 09:48:34 UTC ya make is running...
🟢 2025-06-23 09:48:40 UTC Tests successful.

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
0	0	0	0	0	0

🟢 2025-06-23 09:48:51 UTC Build successful.

[github-actions]

⚪ 2025-06-23 09:46:32 UTC Pre-commit check linux-x86_64-release-asan for 0cc1ded has started.
⚪ 2025-06-23 09:46:36 UTC Artifacts will be uploaded here
⚪ 2025-06-23 09:49:02 UTC ya make is running...
🟢 2025-06-23 09:49:07 UTC Tests successful.

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
0	0	0	0	0	0

🟢 2025-06-23 09:49:14 UTC Build successful.

[github-actions]

✅ Documentation build

Revision built successfully
Revision preview link

[ydbot]

Hey @anton-bobkov, it has been 27 business-hours since the author's last update, could you please review?