[NO ISSUE] Various documentation fixes

[TomStrepsil]

Details

Added some missing details from #42:

• explaining that searchStrategyFactory cannot return the balanced strategy
• added the variant balanced strategy to the "meta-strategies" section of the benchmarking README.md
• various syntactical fixes

Semantic Version Impact

• PATCH - Bug fixes and minor changes (backwards compatible)
• MINOR - New features (backwards compatible)
• MAJOR - Breaking changes (not backwards compatible)

Checklist

• I have added an entry to the [Unreleased] section in CHANGELOG.md
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[Copilot]

Pull request overview

Documentation-focused PR that updates library and benchmarking docs to reflect the balanced-pair strategy ecosystem introduced in #42, plus minor wording/formatting corrections.

Changes:

• Clarifies usage guidance around search strategies (including balanced-pair) and updates strategy descriptions.
• Expands benchmarking documentation to include the balanced-pair regex-count meta-strategy.
• Updates root README guidance around searchStrategyFactory vs direct strategy imports, and adds changelog entries for the newly documented benchmarking strategy.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
src/search-strategies/README.md	Tweaks wording/formatting in the search strategies overview and balanced-pair description.
src/search-strategies/benchmarking/README.md	Renames “Meta-Strategy” section and adds the balanced-pair regex-count benchmarking strategy entry.
README.md	Adds an IMPORTANT note about searchStrategyFactory not returning balanced-pair and adds a balanced-pair usage snippet.
docs/CHANGELOG.md	Adds/updates Unreleased entries to reflect documentation changes.

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[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.