Updating Scrutiny Rockon installation write-up

[Hooverdan96]

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Fixes #383

Updating the scrutiny Rockon installation write-up since switching to official container.

text and screenshots updated.

Checklist

• [X] With the proposed changes no Sphinx errors or warnings are generated.
• [X] I have added my name to the AUTHORS file, if required (descending alphabetical order).

[Hooverdan96]

@phillxnet, @FroggyFlox not sure why the linkcheck failed yesterday. I manually tested this URL today and it came back with the web page in my browser:

https://www.ibm.com/support/pages/node/807406 .

The error was supposedly located in this file:

https://raw.githubusercontent.com/rockstor/rockstor-doc/master/howtos/soho.rst:

https://github.com/rockstor/rockstor-doc/actions/runs/4813087032/jobs/8569166761?pr=428#step:5:407

[Hooverdan96]

Linkcheck failed this time again on the ibm related link, as well as due to one of the the archived btrfs links that generates a 404. I assume, we will fix that based on the other issue described in #424

[phillxnet]

@Hooverdan96 thanks again for updating this write up. Much appreciated.

PR product PRODUCTION published. https://rockstor.com/docs/interface/docker-based-rock-ons/scrutiny.html