Fix Starknet v4.0.1 docs

[immrsd]

Follow-up to #233, which landed the Starknet v4 docs. Fixes the defects review found in the merged pages, all of which are now live. 4.x only; one defect class per commit.

Broken example code — a markdown link path leaked into a macro arg (erc4626.mdx); the UniversalDeployerBootstrapper snippet opened 8 braces and closed 7, with get_udc_address dedented outside the impl (guides/deploy-udc.mdx); two imports that don't exist in v4 (udc.mdx, macros/with_components.mdx); the UDC address was a truncated 0x04..., i.e. the legacy UDC, and now comes from a single {{udc_address}} constant.

Wrong API signatures — 18 corrections against the cairo-contracts v4.0.1 sources, mostly in api/governance.mdx (missing voter / description_hash / proposal_id params, queue_operations' u64 return, CLOCK_MODE → ByteArray, executors: Span<ContractState> → Span<ContractAddress>). Elsewhere: the UDC preset's deploy_contract listed the ContractDeployed event fields as parameters, camelCase transferFrom lost amount, both __validate_deploy__ summaries showed (hash, signature), _token_royalty returned u256s, RoleAdminChanged's admin roles were typed ContractAddress, DefaultAdminDelayChangeCanceled had no entry at all (six links dangling), and the dual IERC20/IERC20Camel listings included the IERC20Metadata functions.

Rendering artifacts — literal \{id\} and stripped braces in api/erc1155.mdx, eight missing type colons, a token_id/tokenId mismatch, an Antora {ERC20Upgradeable-class-hash} leftover, four unbalanced escaped backticks, five backtick-wrapped links.

Anchors — 85 broken fragment links, now zero. 74 headings used [](#Some-Id)Heading, an empty link to an id rather than a definition of it, so the id was never emitted; they now use the Heading [#Some-Id] form used by the other 442 headings in the tree. The remaining 52 links were retargeted to ids that exist.

Stale pins — sncast v0.23.0 (May 2024) → v0.63.0, which required updating the commands: --url is no longer a pre-subcommand flag, --type is now required with --class-hash, and the fee wording changed. Also dropped a false callout claiming the JS examples need unreleased starknetjs@next features.

Verification — pnpm build (1049 pages) and pnpm lint:links clean; anchors 85 → 0; signatures diffed against the v4.0.1 sources; rendered HTML spot-checked for the new anchors, the {id} text and the replacement tokens.

Notes

• src/lib/export-search-indexes.ts deserves a look from whoever owns search — untouched here. Its exclusion list uses bare version substrings ("/3.x/", "/4.x/"), so cairo 2.x stays indexed while 3.x is excluded, legacy overview pages leak in, one cairo carve-out line is dead, and a future "/5.x/" would silently drop Solidity's current docs.
• Roughly 20 of the anchor bugs and several signature errors exist verbatim in 3.x and 2.x. Out of scope here since 4.x is latestStable; happy to retrofit separately.
• Deliberately left alone: span<Call> casing at api/governance.mdx:264/:1633; the preset's undocumented deployContract and the related "replaced with" claim at udc.mdx:107; a second sncast pin at guides/deploy-udc.mdx:170; and stark.estimatedFeeToMaxFee at accounts.mdx:470, which starknet.js dropped after v6.

[netlify]

✅ Deploy Preview for openzeppelin-docs-v2 ready!

Name	Link
🔨 Latest commit	2896b28
🔍 Latest deploy log	https://app.netlify.com/projects/openzeppelin-docs-v2/deploys/6a9849d20f45c2000879cbaa
😎 Deploy Preview	https://deploy-preview-237--openzeppelin-docs-v2.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[ericnordelo]

LGTM!

[stevep0z]

LGTM. Thanks!