[WIP] V3 contract docs upd

[TheDZhon]

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Pull request overview

This WIP pull request updates V3 contract documentation with link format standardization and content improvements. The changes primarily add .md extensions to internal documentation links, update contract version references from v3.0.0 to v3.0.1 for stVaults-related contracts, and refine documentation content for clarity.

Changes:

• Standardized internal documentation links to use .md extensions across multiple contract documentation files
• Updated contract version references from v3.0.0 to v3.0.1 for stVaults contracts (VaultHub, Dashboard, OperatorGrid, LazyOracle, etc.)
• Enhanced documentation clarity with improved descriptions, flow diagrams, and role holder information

Reviewed changes

Copilot reviewed 16 out of 16 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
docs/token-guides/steth-superuser-functions.md	Added .md extensions to links, updated table formatting, added role holder addresses, and added on-chain verification section
docs/lido-v3-whitepaper.mdx	Added .md extension to VaultHub contract reference link
docs/guides/protocol-levers.md	Added .md extensions to links, updated role holder addresses, added new governance entities, removed deprecated Easy Track factories section
docs/contracts/vault-hub.md	Updated version to v3.0.1, corrected contract address, added .md extensions to related links, added manual pause intent section
docs/contracts/validator-consolidation-requests.md	Updated version to v3.0.1, added .md extensions to related links, clarified fee usage
docs/contracts/staking-vault.md	Updated version to v3.0.1, added .md extensions to related links
docs/contracts/staking-vault-factory.md	Updated version to v3.0.1, added .md extensions to related links
docs/contracts/staking-vault-beacon.md	Added .md extensions to related links, clarified upgrade control
docs/contracts/predeposit-guarantee.md	Updated version to v3.0.1, added .md extensions to related links, clarified validator proof requirements
docs/contracts/operator-grid.md	Updated version to v3.0.1, added .md extensions to related links, clarified tier change initiation
docs/contracts/lido.md	Added .md extension to VaultHub link
docs/contracts/lido-locator.md	Added .md extension to VaultHub link
docs/contracts/lazy-oracle.md	Updated version to v3.0.1, added .md extensions to related links, added lazy oracle naming explanation, removed redundant section
docs/contracts/dashboard.md	Updated version to v3.0.1, added .md extensions to related links, removed wrap/unwrap methods, added receive() method, updated fee disbursement description
docs/contracts/burner.md	Updated version to v3.0.1, corrected contract address
docs/contracts/accounting.md	Updated version to v3.0.1, partially updated links (.md extension on VaultHub only), updated flow diagram, added constructor documentation, reordered operation steps

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