Update README.md

README.md

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 # Model Card for OLMo 2 32B
 
-We introduce OLMo 2 32B, to the family of 7B and 13B models featuring a 9-point increase in MMLU, among other evaluation improvements, compared to the original [OLMo 7B](https://huggingface.co/allenai/OLMo-7B) model. These gains come from training on [OLMo-mix-1124](https://huggingface.co/datasets/allenai/olmo-mix-1124) and [Dolmino-mix-1124](https://huggingface.co/datasets/allenai/dolmino-mix-1124) datasets and staged training approach.
+We introduce OLMo 2 32B, to the family of 7B and 13B models featuring a 9-point increase in MMLU, among other evaluation improvements, compared to the original [OLMo 7B](https://huggingface.co/allenai/OLMo-7B) model. These gains come from training on [OLMo-mix-0325](https://huggingface.co/datasets/allenai/olmo-mix-1124) and [Dolmino-mix-0325](https://huggingface.co/datasets/allenai/dolmino-mix-1124) datasets and staged training approach.
 
 OLMo is a series of **O**pen **L**anguage **Mo**dels designed to enable the science of language models. 
-These models are trained on the Dolma dataset. We have released all code, checkpoints, logs, and associated training details on [GitHub](https://github.com/allenai/OLMo). 
+These models are trained on the Dolma dataset. We have released all code, checkpoints, logs, and associated training details on [GitHub](https://github.com/allenai/OLMo-core). 
 
 | Size | Training Tokens | Layers | Hidden Size | Attention Heads | Context Length |
 |------|--------|---------|-------------|-----------------|----------------|