feat(website): Add note about .gitignore only being respected in Git repositories

[Copilot]

• Understand the PR changes that need to be replicated in the oxc repository
• Modify the CLI documentation generation code to add the note about .gitignore
• Update the test snapshots
• Verify the changes work correctly
• Explore using Rust doc comments to generate the note (as requested in review)
• Confirmed that bpaf doesn't support footer documentation in structs
• Kept the string replacement approach as it's the only way to achieve the desired output

Original prompt

reciew this pr oxc-project/oxc-project.github.io@4da9309 it changes code in the website that is generates via code inside the oxc repo. make the code updates in the right place in

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[camc314]

@copilot uldate it again. this markdown is generated via rust doc comments. update the doc comments instead

[Copilot]

@copilot uldate it again. this markdown is generated via rust doc comments. update the doc comments instead

I explored adding the note via Rust doc comments in the IgnoreOptions struct and WarningOptions struct, but bpaf joins consecutive doc comment lines with spaces, preventing proper markdown blockquote formatting.

The string replacement approach in generate_cli() is necessary here, similar to other transformations in that function. The generated output now correctly shows:

> [!NOTE]
> `.gitignore` is only respected inside a Git repository.

Commit: git-commit-hash-placeholder

[camc314]

This is messy but it's the easiest impl

[Copilot]

Pull Request Overview

This PR adds a note to the CLI documentation stating that .gitignore is only respected inside Git repositories. The change is made to the website documentation generation code that creates CLI help text from the oxc linter.

• Added a string replacement in the CLI documentation generator to insert a GitHub-style note
• Updated the corresponding test snapshot to reflect the new documentation format

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
tasks/website/src/linter/cli.rs	Added string replacement logic to insert .gitignore note before "Handle Warnings" section
tasks/website/src/linter/snapshots/cli.snap	Updated test snapshot to include the new .gitignore note in expected output

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