refactor: Update image description minimum word threshold in get_content_of_website_optimized

CONTRIBUTORS.md

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+# Contributors to Crawl4AI
+
+We would like to thank the following people for their contributions to Crawl4AI:
+
+## Core Team
+
+- [Unclecode](https://github.com/unclecode) - Project Creator and Main Developer
+- [Nasrin](https://github.com/ntohidi) - Project Manager and Developer
+
+## Community Contributors
+
+- [Aravind Karnam](https://github.com/aravindkarnam) - Developed textual description extraction feature
+- [FractalMind](https://github.com/FractalMind) - Created the first official Docker Hub image and fixed Dockerfile errors
+- [ketonkss4](https://github.com/ketonkss4) - Identified Selenium's new capabilities, helping reduce dependencies
+
+## Other Contributors
+
+- [Gokhan](https://github.com/gkhngyk) 
+- [Shiv Kumar](https://github.com/shivkumar0757)
+- [QIN2DIM](https://github.com/QIN2DIM)
+
+
+## Acknowledgements
+
+We also want to thank all the users who have reported bugs, suggested features, or helped in any other way to make Crawl4AI better.
+
+---
+
+If you've contributed to Crawl4AI and your name isn't on this list, please [open a pull request](https://github.com/unclecode/crawl4ai/pulls) with your name, link, and contribution, and we'll review it promptly.
+
+Thank you all for your contributions!