Updated docker image version to 2.0.4

[tthakkal]

What does this PR do?

• Updated docker image version to 2.0.4
• Cleaned up and re formatted readme
• added best known config for bf16 and fp8 for llama2, llama 3.1

Fixes # (issue)

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• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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• Did you write any new necessary tests?

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[mandy-li]

LGTM

[mandy-li]

LGTM

[mandy-li]

@regisss , please review and merge if ok for you.

[regisss]

LGTM!