docs: link [converts] to base package in two math/iter/special READMEs

[Planeshifter]

Description

Adds the missing inline [@stdlib/math/base/special/<name>] link to the README summary blockquote and Usage-section description in @stdlib/math/iter/special/deg2rad and @stdlib/math/iter/special/rad2deg, matching the verb-link convention used by 95/97 (97.9%) of sibling packages in the namespace.

Namespace summary

• Members analyzed: 97 non-autogenerated packages under lib/node_modules/@stdlib/math/iter/special/.
• Features with a clear majority (≥75%): file tree, package.json top-level / scripts / directories shape, universal keywords, README H2 section list, docs/repl.txt section order, lib/index.js body, JSDoc @param / @throws / @returns shape (per arity), examples/index.js PRNG choice, README inline link to the base function.
• Features excluded for no clear majority: README summary verb prefix iteratively (51/97 = 53%); package-level mathematics keyword (64/97 = 66%); README/JSDoc Notes "non-numeric (NaN)" bullet (consistent within-package but split across surfaces — out of scope for this routine).
• Conformance on the corrected feature: 95/97 (97.9%) of sibling packages link the underlying base function inline in both the summary blockquote and the Usage-section description.

@stdlib/math/iter/special/deg2rad

The README summary blockquote (the > line under # iterDeg2rad) and the Usage-section description (the line right after #### iterDeg2rad( iterator )) were missing an inline markdown link to [@stdlib/math/base/special/deg2rad], despite the link reference being defined in the <section class="links"> block. 95 of 97 sibling packages (98%) carry this link in both slots. Wraps the verb converts as [converts][@stdlib/math/base/special/deg2rad], matching the verb-link pattern used by the ceil, floor, round, and trunc family.

@stdlib/math/iter/special/rad2deg

Same drift, same shape: the summary blockquote under # iterRad2deg and the Usage-section description under #### iterRad2deg( iterator ) were both missing the inline [@stdlib/math/base/special/rad2deg] link, while the reference itself was already defined in <section class="links">. Wraps the verb converts in both slots as which [converts][@stdlib/math/base/special/rad2deg] an angle from radians to degrees, matching the verb-link shape used by the ceil / floor / round / trunc family.

Related Issues

None.

Questions

No.

Other

Validation

• Structural extraction: filesystem walk + package.json / README / docs/repl.txt / docs/types/index.d.ts / lib/index.js / lib/main.js shape capture across all 97 members. 100% conformance on every set-valued structural feature except the inline-link feature corrected here.
• Semantic extraction: programmatic cross-package scan over lib/main.js JSDoc shape (param types, throws messages, returns type, example presence), public signatures, validation prologues, error construction, and require'd dependencies — every feature 100% conforming within its arity class (92 arity-1 + 5 arity-2). Per-package semantic agents were skipped in favor of the direct scan because the namespace is template-uniform and the per-package read would have surfaced no additional signal.
• Three-agent drift validation: opus cross-reference (needs-human check against tests, examples, and sibling-package docs) and sonnet structural-review (closest-cousin convention match) returned confirmed-drift for both outliers. Semantic-review was skipped because the feature is purely structural (README content).

Deliberately excluded

• @stdlib/math/iter/special/pow — currently the subject of open PR docs: fix package-wide doc errors in two math/iter packages #12473 (different fix, but covered by the open-PR collision gate); no overlapping correction proposed in this PR.
• factorial / factorialln — the 2 packages whose examples/index.js uses discreteUniform instead of uniform: this is a domain-driven choice (factorials are defined on non-negative integers) and was marked intentional-deviation and dropped.
• ceil / floor / round / trunc family + cospi / sinpi — 14 packages whose JSDoc summary in lib/main.js reads Returns an iterator which {rounds|computes} ... rather than the majority Returns an iterator which iteratively ...: phrasing matches each package's own README and docs/repl.txt, so flipping to the majority would introduce a within-package inconsistency. Marked intentional-deviation.
• README / JSDoc "non-numeric (NaN)" Notes bullet — README includes the bullet 97/97 times, JSDoc includes it 5/97 times (the arity-2 packages only). The within-package README-vs-JSDoc inconsistency is itself uniform across the namespace and is not a cross-package drift; out of scope for this routine.
• package.json keyword mathematics (64/97 = 66%) — below the 75% majority threshold.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

AI Assistance

When authoring the changes proposed in this PR, did you use any kind of AI assistance?

• Yes
• No

If you answered "yes" above, how did you use AI assistance?

• Code generation (e.g., when writing an implementation or fixing a bug)
• Test/benchmark generation
• Documentation (including examples)
• Research and understanding

Disclosure

This PR was authored by Claude Code on behalf of @Planeshifter as the output of an automated cross-package API-drift scan over @stdlib/math/iter/special. Candidate corrections were derived from structural + programmatic-semantic majority votes across all 97 namespace members, gated by an open-PR / autogen / materiality pre-filter, and confirmed by two independent reviewer agents (opus cross-reference + sonnet structural-review) before commits were applied in the primary worktree. A maintainer will audit and promote the PR out of draft.

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@stdlib-js/reviewers

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Generated by Claude Code

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/iter/special/deg2rad	$\\color{green}114/114$ $\\color{green}+100.00\\%$	$\\color{green}3/3$ $\\color{green}+100.00\\%$	$\\color{green}1/1$ $\\color{green}+100.00\\%$	$\\color{green}114/114$ $\\color{green}+100.00\\%$
math/iter/special/rad2deg	$\\color{green}114/114$ $\\color{green}+100.00\\%$	$\\color{green}3/3$ $\\color{green}+100.00\\%$	$\\color{green}1/1$ $\\color{green}+100.00\\%$	$\\color{green}114/114$ $\\color{green}+100.00\\%$

The above coverage report was generated for the changes in this PR.