Update docs

[rocketnova]

Ticket

• N/A

Changes

What was added, updated, or removed in this PR.

• Updates main README.md to:
  • List main features of the repo
  • Fix a broken doc link

Context for reviewers

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• Ported from Add high level overview of features to main README and update broken link wic-mt-demo-project-mock-api#22

Testing

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