fix unbalanced parens in arrow regex

[davidosomething]

pretty sure this one parens needs to be escaped,

currently, for me at least,

module.exports = (e) => {
};

documents as

/**
 * @param e)
 */
module.exports = (e) => {
};

There's an unescape parens there, so I tweaked it a bit. Let me know if it checks out for you.

[heavenshell]

@davidosomething
Thx. Still busy now.
Please wait a while 🙇
I'll look into your Pull Requests later...

[heavenshell]

Fix conflict.
Thank you!