docs: quote pip extras install examples

[nyxst4ck]

Summary

• Quote pip install examples that include extras.

Why

• Shells such as zsh can expand unquoted bracket expressions before pip receives them.

Scope

• Files changed:
• docs/ahds_integration.md
• docs/samples/python/langextract/index.md
• presidio-analyzer/README.md
• This does not change dependencies or runtime behavior.

Testing

• git diff --check

Maintainer Fit

• Small install-command correctness fix.
• Duplicate PR search terms checked: quote pip extras, quote optional dependency, zsh pip install extras, pip extras install examples

[Copilot]

Pull request overview

This PR updates documentation install commands to quote pip install ...[extra] examples so shells like zsh don’t expand bracket expressions before pip receives them.

Changes:

• Quoted pip install examples for presidio-analyzer[langextract] in analyzer README and LangExtract sample docs.
• Quoted pip install examples for AHDS extras in AHDS integration docs.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 6 comments.

File	Description
presidio-analyzer/README.md	Quotes the pip install example for the langextract extra.
docs/samples/python/langextract/index.md	Quotes the pip install examples for the langextract extra (two occurrences).
docs/ahds_integration.md	Quotes pip install examples for the ahds extras (analyzer/anonymizer, plus troubleshooting).

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

[SharonHart]

@nyxst4ck can you address the comments?

[nyxst4ck]

Addressed the review comments:

• switched the remaining extras install examples from single quotes to double quotes for Windows CMD compatibility
• restored indentation for the pip install line inside the numbered-list code fence in docs/ahds_integration.md

Pushed as c2c44ae.