doc: document http's server.listen return value

The server method returns `self` in order to allow chaining. PR-URL: nodejs#4590 Fixes: nodejs#4571 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Roman Reiss <[email protected]>
scovetta · Apr 2, 2016 · e42869f · e42869f
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commit e42869f
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diff --git a/doc/api/http.markdown b/doc/api/http.markdown
@@ -511,6 +511,8 @@ Listening on a file descriptor is not supported on Windows.
 This function is asynchronous. The last parameter `callback` will be added as
 a listener for the `'listening'` event. See also [`net.Server.listen()`][].
 
+Returns `server`.
+
 ### server.listen(path[, callback])
 
 Start a UNIX socket server listening for connections on the given `path`.