src: update --inspect hint text

* Removes "experimental" warning.
* Prints ws://_ip_:_port_/_uuid_ for all IDs.
* Refers to nodejs.org guide for more details.

PR-URL: https://github.com/nodejs/node/pull/11207


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michael Dawson <mhdawson@ibm.com>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>