Document return value of http.server.listen #4571
Description
As noted in expressjs/expressjs.com#539, docs don't specify the return value of http.server.listen but it does appear return an http.Server object.
I'd add a PR, but I'm not sure if the return value is the same for all flavors (i.e. signatures) of the function.
Activity
doc: document http's server.listen return value
doc: document http's server.listen return value
doc: document http's server.listen return value
doc: document http's server.listen return value
doc: document http's server.listen return value
doc: document http's server.listen return value
doc: document http's server.listen return value
doc: document http's server.listen return value