Update README.md

README.md

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 # Challenging the limit of 464M params: Zeta 4
 
-**Ollama:** [DiamondGotCat/Zeta-3](https://ollama.com/DiamondGotCat/Zeta-4)
+**Ollama:** [DiamondGotCat/Zeta-4](https://ollama.com/DiamondGotCat/Zeta-4)
 
 ## Quantized Model (GGUF)
 - [Static Quant](https://huggingface.co/mradermacher/Zeta-4-GGUF)