Improve jetpack-changelog Claude command: add step to return to root directory

[CGastrell]

Proposed changes:

• Add instruction to navigate back to root repo directory after running the changelogger command
• This fixes an issue where subsequent commands would fail because the working directory was still in the project subdirectory

Other information:

• Have you written new tests for your changes, if applicable? N/A - documentation only
• Have you checked the E2E test CI results, and verified that your changes do not break them? N/A
• Have you tested your changes on WordPress.com, if applicable? N/A

Jetpack product discussion

N/A - Developer tooling improvement

Does this pull request change what data or activity we track or use?

No

Testing instructions:

• Run /jetpack-changelog in Claude Code on a branch with project changes
• Verify the command now includes step 5 to navigate back to root repo directory
• Confirm that after running the command, you are back in the repo root (not stuck in a project subdirectory)

[github-actions]

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[Copilot]

Pull request overview

This PR improves the jetpack-changelog Claude command by adding an instruction to navigate back to the root repository directory after running the changelogger command, preventing subsequent commands from failing due to being in a project subdirectory.

Key Changes:

• Adds step 5 to navigate back to the root repo directory
• Renumbers the git staging step from 5 to 6

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[Copilot]

The instruction to navigate back to the root directory should include the actual command to execute, similar to how other steps provide explicit commands. Consider specifying the command, such as using cd - to return to the previous directory, or cd ../.. or similar depending on the typical project depth.

Suggested change

	5. Navigate back to root repo directory
	5. Navigate back to root repo directory: `cd -`