inspector: update `--inspect` hint text
Changes link hint text:
$ node --inspect -e ""
Debugger listening on ws://127.0.0.1:9229/0f2c936f-b1cd-4ac9-aab3-f63b0f33d55e
For help, see: https://nodejs.org/en/docs/inspector
This would temporarily unbreak test/internet/test-inspector-help-page.js
Refs: https://github.com/nodejs/nodejs.org/issues/5624 The guide link might be gone in foreseeable future, so this hint should probably be replaced with something else. Suggestions are very welcome.