Docs: fix a broken link

[chenxsan]

Prerequisites checklist

• I have read the contributing guidelines.

What is the purpose of this pull request? (put an "X" next to an item)

[x] Documentation update
[ ] Bug fix (template)
[ ] New rule (template)
[ ] Changes an existing rule (template)
[ ] Add autofixing to a rule
[ ] Add a CLI option
[ ] Add something to the core
[ ] Other, please explain:

What changes did you make? (Give an overview)

Fix a broken link.

1. Before - https://eslint.org/docs/user-guide/command-line-interface#fix Notice that it won't scroll to the fix option in this case.
2. After - https://eslint.org/docs/user-guide/command-line-interface#-fix

Is there anything you'd like reviewers to focus on?

Nothing.

[snitin315]

Good catch. Thanks!

[mdjermanovic]

Thanks for contributing!