Revamp installation how-to guides

[Reshrahim]

Thank you for helping make the Radius documentation better!

Please follow this checklist before submitting:

• [ ] Read the contribution guide
• [ ] Commands include options for Linux, MacOS, and Windows within codetabs
• [ ] New file and folder names are globally unique
• [ ] Page references use shortcodes instead of markdown or URL links
• [ ] Images use HTML style and have alternative text
• [ ] Places where multiple code/command options are given have codetabs

In addition, please fill out the following to help reviewers understand this pull request:

Description

Issue reference

[github-actions[bot]]

:x: Spellcheck Failed

There are spelling errors in your PR. Visit the workflow output to see what words are failing.

Adding new words

If you are adding a new custom word refer to the docs guide