[docs] split configuration reference by top-level sections (#22314)

[ayakivosklznak]

Changelog entry

Pr 22314 stable 25 2

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• Documentation (changelog entry is not required)

Description for reviewers

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Hi! Thank you for contributing!
The tests on this PR will run after a maintainer adds an ok-to-test label to this PR manually. Thank you for your patience!

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❌ Documentation build

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Build logs

Errors (2)

❌ ENOENT: no such file or directory, open '/ru/reference/configuration/hive_config.md'

❌ Link is unreachable: en/security/builtin-security.md in en/reference/configuration/security_config.md.

Warnings (61)

⚠️ Skip error: SkippedEvalError: Cannot apply an unsupported filter: ansible_config_file | dirname

⚠️ Title not found: ../../../contributor/hive.md#emergency in ru/troubleshooting/performance/ydb/tablets-moved.md

⚠️ Title not found: ../../../contributor/hive.md#imbalance in ru/troubleshooting/performance/ydb/tablets-moved.md

⚠️ Title not found: ../../../contributor/hive.md#scatter in ru/troubleshooting/performance/ydb/tablets-moved.md

⚠️ Title not found: ../../../reference/configuration/index.md#security-bootstrap in ru/yql/reference/syntax/alter-group.md

⚠️ Title not found: ../../../reference/configuration/index.md#security-bootstrap in ru/yql/reference/syntax/alter-user.md

⚠️ Title not found: ../../../reference/configuration/index.md#security-bootstrap in ru/yql/reference/syntax/create-group.md

⚠️ Title not found: ../../../reference/configuration/index.md#security-bootstrap in ru/yql/reference/syntax/create-user.md

⚠️ Title not found: ../../../reference/configuration/index.md#security-bootstrap in ru/yql/reference/syntax/drop-group.md

⚠️ Title not found: ../../../reference/configuration/index.md#security-bootstrap in ru/yql/reference/syntax/drop-user.md

⚠️ Title not found: ../../security/builtin-security.md in en/reference/configuration/security_config.md

⚠️ Variable ansible_config_file | dirname not found in ru/devops/deployment-options/ansible/initial-deployment.md

⚠️ en/concepts/analytics/concepts/etl.md: 49: MD009 / no-trailing-spaces Trailing spaces [Expected: 0 or 2; Actual: 3]

⚠️ en/concepts/analytics/concepts/ml.md: 16: MD030 / list-marker-space Spaces after list markers [Expected: 1; Actual: 3]

⚠️ en/concepts/analytics/concepts/ml.md: 17: MD030 / list-marker-space Spaces after list markers [Expected: 1; Actual: 3]

Log was truncated. (46 records)

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🟢 2025-12-23 19:13:16 UTC The validation of the Pull Request description is successful.