Closes #18055 - Updated README with Table Of Contents

[raghav2005]

Summary of the Pull Request

References and Relevant Issues

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

PR Checklist

• Closes Table Of Contents in README #18055
• Tests added/passed
• Documentation updated
  • If checked, please file a pull request on our docs repo and link it here: #xxx
• Schema updated (if necessary)

[raghav2005]

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