Update README.md

Author: sr-857

README.md

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 [Explore Live Demo](https://sr-857.github.io/SpectraGraph/landing/) • [Report a Bug](https://github.com/your-repo/issues) • [SWoC Guide](./docs/HACKATHON_BOOTSTRAP.md)
 
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-![socialwinterofcode_cover](https://github.com/user-attachments/assets/b3b6dd89-1039-48a5-867c-0c81556b77d8)
 
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