[docs] Fix Husky hook example

[hassankhan]

Description

Fixes documentation to reflect a correct Husky setup, as per @escapedcat's review

Motivation and Context

Usage examples

// commitlint.config.js
module.exports = {

};

echo "your commit message here" | commitlint # fails/passes

How Has This Been Tested?

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.

[peter-mouland]

nice update. This had me for a while today

[marionebl]

Thanks again. :)