[docs] remove outdated limitation from cdc.md

[blinkov]

Changelog entry

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Changelog category

• Documentation (changelog entry is not required)

Description for reviewers

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[github-actions]

🟢 2025-06-25 10:26:34 UTC The validation of the Pull Request description is successful.

[ydbot]

🔄 New commits pushed — @ElenaAfina please take a look.

[github-actions]

⚪ 2025-06-25 10:28:04 UTC Pre-commit check linux-x86_64-relwithdebinfo for 5a1de11 has started.
⚪ 2025-06-25 10:28:16 UTC Artifacts will be uploaded here
⚪ 2025-06-25 10:30:39 UTC ya make is running...
🟢 2025-06-25 10:30:45 UTC Tests successful.

Test history | Ya make output | Test bloat

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

🟢 2025-06-25 10:30:51 UTC Build successful.

[github-actions]

⚪ 2025-06-25 10:29:25 UTC Pre-commit check linux-x86_64-release-asan for 5a1de11 has started.
⚪ 2025-06-25 10:29:47 UTC Artifacts will be uploaded here
⚪ 2025-06-25 10:32:49 UTC ya make is running...
🟢 2025-06-25 10:32:54 UTC Tests successful.

Test history | Ya make output | Test bloat

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

🟢 2025-06-25 10:33:00 UTC Build successful.

[github-actions]

✅ Documentation build

Revision built successfully
Revision preview link

[ElenaAfina]

lgtm

lgtm