docs: add kaiko to the list of users (#338)

Author: pythonmonty

README.md

@@ -47,6 +47,7 @@ pip install dagster-ray
 These happy users are running `dagster-ray` in production:
 
 - [Anam](https://anam.ai)
+- [kaiko](https://kaiko.ai/)
 - [Sanas](https://www.sanas.ai/)
 
 ## 🤝 Contributing

docs/index.md

@@ -156,6 +156,7 @@ Learn more by reading the [tutorials](tutorial/index.md).
 These happy users are running `dagster-ray` in production:
 
 - [Anam](https://anam.ai)
+- [kaiko](https://kaiko.ai/)
 - [Sanas](https://www.sanas.ai/)
 
 ## 📚 What's Next?