fix(entity-resolution): YAML parse error in description

[jdanielmyers]

Summary

Fixes a YAML parse error in skills/entity-resolution/SKILL.md. The description field was a single line containing Triggers: — YAML parses internal : followed by space as a mapping key, breaking the frontmatter.

$ python3 -c "import yaml; yaml.safe_load(open('skills/entity-resolution/SKILL.md').read().split('---')[1])"
yaml.scanner.ScannerError: mapping values are not allowed here
  in "<unicode string>", line 4, column 475

Fix

Convert description: to a folded block scalar (>-). YAML treats the body as a single string regardless of internal :. No semantic change — the description text is identical when joined.

Test plan

• python3 -c "import yaml, re; yaml.safe_load(re.match(r'^---\\\\s*\\\\n(.*?)\\\\n---', open('SKILL.md').read(), re.DOTALL).group(1))" parses cleanly
• All required frontmatter keys present: author, description, language, name, prompt, status, summary, title, tools, type
• No body content changes