Update the docs for connecting to NodeJS repl

[abhi18av]

Hello @bhauman

Thanks for this wonderful tool and especially the awesome documentation!

I was trying to connect to nodejs repl using the following configs (see image). The build seems to work fine, however it seems that the figwheel-devtools connection isn't established.

NOTE: I've also tried the same, with a localhost:9500 added to the devtools Add connections option.

I have searched the docs for more details on how to proceed with this, but could find a solution. I'd happy to add a PR for the docs regarding this - once I am successful myself😅