Fix a small issue in agent-starter-pack

[bglglzd]

I fixed a small set of formatting issues that were easy to clean up without touching behavior.

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[gemini-code-assist]

Code Review

This pull request applies minor formatting corrections across several documentation and configuration files, primarily ensuring that files end with a single newline character and removing trailing whitespace in the main README.md. There are no review comments, and I have no additional feedback to provide.