chore: add keywords

[Planeshifter]

Description

@stdlib/stats/base/dists/hypergeometric/mean: add the three keywords mean, average, and avg to package.json. Each is present in 35 of 37 sibling mean packages across stats/base/dists/* (94.6%); hypergeometric/mean was the sole outlier within scope (negative-binomial/mean is the other namespace-wide outlier and out of scope here). The insertion point — between discrete and hypergeometric — mirrors the placement used by poisson/mean, geometric/mean, bernoulli/mean, and planck/mean. Metadata only; no source, test, or behavioral changes.

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Checklist

• Read, understood, and followed the contributing guidelines.

AI Assistance

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• Code generation (e.g., when writing an implementation or fixing a bug)
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Disclosure

This PR was authored by Claude Code via the cross-package drift-detection routine. The within-namespace majority vote across the 11 members of stats/base/dists/hypergeometric did not surface any drift on its own (the namespace splits cleanly into a 4-package distribution-function cluster, a 6-package summary-statistic cluster, and the ctor, with each cluster internally consistent); the surfaced correction came from the routine's ecosystem-wide ≥90% pre-validation gate when sibling sub-package types were cross-referenced. Two validation agents (opus cross-reference, sonnet structural-review) independently returned confirmed-drift before any file was edited.

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@stdlib-js/reviewers

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Generated by Claude Code

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
stats/base/dists/hypergeometric/mean	$\color{green}194/194$ $\color{green}+100.00\%$	$\color{green}13/13$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}194/194$ $\color{green}+100.00\%$

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