doc: how to document multiple inheritance

[trivikr]

Is your feature request related to a problem? Please describe.
This request was raised in PR comment #29290 (comment)

Describe the solution you'd like
How to represent multiple inheritance in Node.js documentation

Describe alternatives you've considered

• The documentation only shows single parent class, or no inheritance at all
• Going through the code to find out particular class extends multiple classes

[Trott]

@nodejs/documentation