Update README.md

Author: kesku

README.md

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-<a href="https://docs.perplexity.ai/cookbook" target="_blank">
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 A comprehensive collection of practical examples, integration guides, and community showcases for building with [Perplexity's Sonar API](https://sonar.perplexity.ai/) - the fastest, most cost-effective AI answer engine with real-time search capabilities.
 
 📖 **[View the full cookbook →](https://docs.perplexity.ai/cookbook)**