Sharne/1859 systemtuning

[harneshalaka]

PR creator: Transforming information when tuning is needed into a smartdoc. https://susedoc.github.io/doc-sle/main/html/SLES-tuning/cha-tuning-basics.html provides guidance.

PR creator: Are there any relevant issues/feature requests?

• bsc#...1859
• jsc#...

PR reviewer: Checklist for editorial review

Apart from the usual checks, please double-check also the following:

• do any new files fulfill the naming conventions specified in https://github.com/SUSE/doc-modular/blob/main/templates/README.md?
• article title/structure title: does it have the required length and does it use sentence style capitalization?
• revhistory: is it up-to-date and does it follow the guidelines specified in https://documentation.suse.com/style/current/html/style-guide-db/sec-smartdocs.html#sec-revhistory?
• metadata: does it follow the guidelines specified in https://documentation.suse.com/style/current/html/style-guide-db/sec-smartdocs.html#sec-taglist-smartdocs?