style(README): markdown highlight Note section

[guspan-tanadi]

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
  Highlight Note section by markdown formatting.
• Why was this change needed? (You can also link to an open issue here)
  The Note section can have markdown as introduced by community. The display of Note section lightly marked by audience.
• Other information:

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
docs-gpt	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 14, 2023 11:35pm
nextra-docsgpt	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 14, 2023 11:35pm

[vercel]

@guspan-tanadi is attempting to deploy a commit to the Arc53 Team on Vercel.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (5c785e4) 19.69% compared to head (69d40b5) 19.69%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #775   +/-   ##
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  Coverage   19.69%   19.69%           
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  Files          62       62           
  Lines        2889     2889           
=======================================
  Hits          569      569           
  Misses       2320     2320           

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[dartpain]

Can you please share some screenshots of how it will looks like,
Looks like a great addition!

[guspan-tanadi]

Can you please share some screenshots of how it will looks like, Looks like a great addition!

Thanks for your interest. Example as part of QuickStart section shown as above.

[dartpain]

Thank you!