chore: fix typo in Dangerfile

Description

Super minor! Noticed a typo in the comment at the top of the Dangerfile :)

Related Issues

Noticed while consulting !1093 (diffs) as I work on gitlab-org/code-creation/repository-x-ray#27 (closed)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation
• Chore (Related to CI or Packaging to platforms)
• Test gap