Event Loop guide using deprecated `util.inherits` function

[louwers]

Affected URL(s)

https://nodejs.org/en/docs/guides/event-loop-timers-and-nexttick

Description of the problem

On the bottom of this help page, util.inherits is used.

This function is deprecated. I think the docs should set an example and not use deprecated functionality! The example should be updated with class based syntax.

[louwers]

I created a pull request here: nodejs/nodejs.org#4483