docs: align skill license metadata with MIT

[egdev6]

Linked issue

Refs #11

PR type

• Documentation only

Summary

• Align the skill frontmatter license with the repository-wide MIT license.
• Keep the issue open until the merge is verified, then thank the reporter and close it.

Changes

File	Change
skills/github-repository-bootstrap/SKILL.md	Declare license: MIT instead of Apache-2.0.

Test plan

• Parsed the skill YAML frontmatter in a verification agent; confirmed MIT matches LICENSE, package.json, and README.md.
• git diff --check passed; scoped diff contains only the metadata change.
• npm test not run: bootstrap behavior tests do not exercise license metadata.
• Shellcheck not applicable: no shell scripts changed.

Contributor checklist

• Issue docs: clarify skill and repository license #11 has status:approved.
• Conventional commit 7079f28 has no co-author trailer.
• Changed skill frontmatter parsed successfully in a verification agent.
• Exactly one type:* label (type:docs).
• CI tests passed on Ubuntu, macOS, and Windows (release job skipped for PR).