Fixed model name typo in README.md

In the huggingface transformers example, the model is referred to as 'Salesforce/Llama-xLAM-2-3b-fc-r' but should read 'Salesforce/xLAM-2-3b-fc-r', as is correctly listed when clicking the 'Use this model' dropdown.

README.md

@@ -97,8 +97,8 @@ The new xLAM models are designed to work seamlessly with the Hugging Face Transf
 import torch
 from transformers import AutoModelForCausalLM, AutoTokenizer
 
-tokenizer = AutoTokenizer.from_pretrained("Salesforce/Llama-xLAM-2-3b-fc-r")
-model = AutoModelForCausalLM.from_pretrained("Salesforce/Llama-xLAM-2-3b-fc-r", torch_dtype=torch.bfloat16, device_map="auto")
+tokenizer = AutoTokenizer.from_pretrained("Salesforce/xLAM-2-3b-fc-r")
+model = AutoModelForCausalLM.from_pretrained("Salesforce/xLAM-2-3b-fc-r", torch_dtype=torch.bfloat16, device_map="auto")
 
 # Example conversation with a tool call
 messages = [