VKC-125: Add doc changes to `1.4.z`

[arunmk]

…(#196)

when cross-ported. Also move the feature matrix up based on feedback from Stephen

(cherry picked from commit 11e7641bc855b98d28ae7147cc29b0c5c330930c)

Description

Please provide a brief description of the changes proposed in this Pull Request

Checklist

• [X] tested locally
• [ ] updated any relevant dependencies
• [ ] updated any relevant documentation or examples

Testing Done

Please provide a screenshot of the testing results for the code change in this Pull Request. Verify that this pull request's code change will not affect CSI's normal operation Looked at generated README.md

Issue

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Fixes #

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