Docs: Fix typo in max-len ignorePattern example.

[tmartin1]

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

Proposed change to the documentation for the max-men rule, specifically, the ignorePattern example (https://eslint.org/docs/rules/max-len#ignorepattern).

Proposed change is to add a \ to the ignorePattern example to properly escape the final (.

The current example of "ignorePattern": "^\\s*var\\s.+=\\s*require\\s*\(" results in an error due to the invalid escape character in the string because the final open parentheses character isn't properly escaped.

This changes the example to: "ignorePattern": "^\\s*var\\s.+=\\s*require\\s*\\(", which is properly escaped.

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

No.

[jsf-clabot]

All committers have signed the CLA.

[platinumazure]

LGTM, thanks!

[platinumazure]

Merged, thanks @tmartin1 for contributing!