tools: ignore URLs in line length linting

Where inclusion of a lengthy URL causes a line to exceed 80 characters
in our code base, do not report the line length as a linting error.

PR-URL: https://github.com/nodejs/node/pull/11890


Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>