docs: remove double quote character added by #2391

[psyrendust]

A trailing double quote was added to ./docs/reference-cli.md when #2391 landed.

Description

Removes trailing double quote " ./docs/reference-cli.md that landed with #2391.

Motivation and Context

Unnecessary double quote " in docs.

Usage examples

N/A

How Has This Been Tested?

Viewed file in my fork: https://github.com/psyrendust/commitlint/blob/971c5195e06e5af7d5bf66b30f9931efbf5a9f0d/docs/reference-cli.md

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)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[escapedcat]

Thanks!