Update README.md

README.md

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 # Hammer2.1-0.5b Function Calling Model
 
 ## Introduction
-We're excited to release lightweight Hammer 2.1 models ([0.5B](https://huggingface.co/MadeAgents/Hammer2.1-0.5b) ,   [1.5B](https://huggingface.co/MadeAgents/Hammer2.1-1.5b) ,   [3B](https://huggingface.co/MadeAgents/Hammer2.1-3b) ,  and  [7B](https://huggingface.co/MadeAgents/Hammer2.1-7b)) with strong function calling capability, which empower developers to build personalized, on-device agentic applications. These models are based on the Qwen 2.5 coder series and utilize [function masking techniques](https://arxiv.org/abs/2410.04587). Hammer 2.5 series bring significant enhancements, while still maintaining the basic functionality of Hammer 2.0's Single-Turn interaction and further strengthening other capabilities.
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+Hammer refers to a series of lightweight Large Action Models. Currently, we are releasing Hammer 2.1 models ([0.5B](https://huggingface.co/MadeAgents/Hammer2.1-0.5b), [1.5B](https://huggingface.co/MadeAgents/Hammer2.1-1.5b), [3B](https://huggingface.co/MadeAgents/Hammer2.1-3b), and [7B](https://huggingface.co/MadeAgents/Hammer2.1-7b)) with strong function calling capability. These models are based on the Qwen 2.5 coder series and utilize [function masking techniques](https://arxiv.org/abs/2410.04587) and other advanced technologies. Hammer 2.5 series bring significant enhancements, while still maintaining the basic functionality of Hammer 2.0's Single-Turn interaction and further strengthening other capabilities.
 
 ## Model Details
 The Hammer 2.5 models, fine-tuned from the Qwen 2.5 coder series, inherit Hammer 2.0's advantages and are enhanced as follows: