docs: update modelscope.mdx (#32823)

### Description
This PR is primarily aimed at updating some usage methods in the
`modelscope.mdx` file.
Specifically, it changes from `ModelScopeLLM` to `ModelScopeEndpoint`.
### Relevant PR
The relevant PR link is:
#28941

Author: yrk111222

docs/docs/integrations/providers/modelscope.mdx

@@ -40,11 +40,11 @@ embeddings.embed_query("What is the meaning of life?")
 ```
 
 ## LLMs
-`ModelScopeLLM` class exposes LLMs from ModelScope.
+`ModelScopeEndpoint` class exposes LLMs from ModelScope.
 
 ```python
-from langchain_modelscope import ModelScopeLLM
+from langchain_modelscope import ModelScopeEndpoint
 
-llm = ModelScopeLLM(model="Qwen/Qwen2.5-Coder-32B-Instruct")
+llm = ModelScopeEndpoint(model="Qwen/Qwen2.5-Coder-32B-Instruct")
 llm.invoke("The meaning of life is")
 ```