docs: fix offset parameter wording in blas/ext/base/*sort2* READMEs

[Planeshifter]

Description

This pull request propagates a documentation fix merged to develop on 2026-05-20 to sibling packages exhibiting the same defect.

Source commit 618583c83 ("docs: update copy") corrected the @stdlib/blas/ext/base/dediff README, which referred to the package's multiple offset parameters in the singular ("the offset parameter ... a starting index"). The same wording is present in three sort2 sibling packages, each of which documents two offset parameters (offsetX and offsetY):

• blas/ext/base/dsort2ins
• blas/ext/base/ssort2hp
• blas/ext/base/ssort2sh

Each README is updated to the plural phrasing already used by sibling packages such as dediff and ssort2ins.

Related Issues

None.

Questions

No.

Other

Search was scoped to blas/ext/base. Single-offset packages, where the singular phrasing is correct, were deliberately excluded; the three sort2 packages above are the only siblings documenting multiple offset parameters that still used the singular wording. The change is a verbatim string replacement; two independent reviews confirmed each target package documents multiple offset parameters before the change was applied.

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 pull request was prepared by an automated fix-propagation routine running with Claude Code. The routine identified the documentation fix in commit 618583c83, located sibling packages with the same wording error, and applied the equivalent correction. Two independent reviews verified each target package documents multiple offset parameters before the change was applied.

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@stdlib-js/reviewers

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Generated by Claude Code

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
blas/ext/base/dsort2ins	$\color{green}666/666$ $\color{green}+100.00%$	$\color{green}74/74$ $\color{green}+100.00%$	$\color{green}4/4$ $\color{green}+100.00%$	$\color{green}666/666$ $\color{green}+100.00%$
blas/ext/base/ssort2hp	$\color{green}631/631$ $\color{green}+100.00%$	$\color{green}67/67$ $\color{green}+100.00%$	$\color{green}4/4$ $\color{green}+100.00%$	$\color{green}631/631$ $\color{green}+100.00%$
blas/ext/base/ssort2sh	$\color{green}543/543$ $\color{green}+100.00%$	$\color{green}53/53$ $\color{green}+100.00%$	$\color{green}4/4$ $\color{green}+100.00%$	$\color{green}543/543$ $\color{green}+100.00%$

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