docs: update note in README.md

[ersachin3112]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

Note

This is new Note syntax

Warning

This is new Warning syntax

update note in README.md

Breaking Changes

No

Additional Info

No

[codecov]

Codecov Report

Merging #956 (0243278) into master (26f711e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #956   +/-   ##
=======================================
  Coverage   90.34%   90.34%           
=======================================
  Files           5        5           
  Lines         829      829           
  Branches      221      221           
=======================================
  Hits          749      749           
  Misses         70       70           
  Partials       10       10           

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