Update README.md

Lanugage -> Language

README.md

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 # OpenFedLLM: Training Large Language Models on Decentralized Private Data via Federated Learning
 
-**OpenFedLLM** is an open-source research-use codebase for training *Large Lanugage Models (LLM)* via federated learning. Please check our [paper](https://arxiv.org/abs/2402.06954) for details and the corresponding empirical study.
+**OpenFedLLM** is an open-source research-use codebase for training *Large Language Models (LLM)* via federated learning. Please check our [paper](https://arxiv.org/abs/2402.06954) for details and the corresponding empirical study.
 
 OpenFedLLM includes the following key features:
 - 7 **federated learning** algorithms (e.g., *FedAvg*, *FedProx*, *SCAFFOLD*, *FedAvgM*, etc.).
@@ -90,4 +90,4 @@ Please cite our paper if you find the repository helpful.
   journal={arXiv preprint arXiv:2402.06954},
   year={2024}
 }
-```
+```