docs: replace index.md with symbolic link to README.md

[iprasannamb]

This PR replace index.md with symbolic link to README.md

Pull Request Checklist

The PR is

• Symbolic link
• Document Update

About this PR:

• Documentation has been updated
• No unnecessary changes have been introduced

Author's checklist:

• I have reviewed the changes and it contains no misspelling.

[xmnlab]

LGTM! thanks @iprasannamb

[Saransh-cpp]

This leads to a

UndefinedError: 'env' is undefined

error in the rendered docs. See #140 for a fix.

[xmnlab]

good catch @Saransh-cpp , appreciate that!

@iprasannamb, as mentioned by @Saransh-cpp , you will need to apply the same changes from here #140 to the README.md file

[iprasannamb]

@xmnlab , @Saransh-cpp As you mentioned about the changes , I've made the changes in README.md

[Saransh-cpp]

Thanks, @iprasannamb!

[xmnlab]

@iprasannamb , thanks for working on that.
could you rebase your branch on top of the upstream main and after that, rerun the linter locally?

pre-commit run --all-files