Update OLLamaLLMService docstrings

src/pipecat/services/ollama/llm.py

@@ -4,9 +4,22 @@
 # SPDX-License-Identifier: BSD 2-Clause License
 #
 
+"""OLLama LLM service implementation for Pipecat AI framework."""
+
 from pipecat.services.openai.llm import OpenAILLMService
 
 
 class OLLamaLLMService(OpenAILLMService):
+    """OLLama LLM service that provides local language model capabilities.
+
+    This service extends OpenAILLMService to work with locally hosted OLLama models,
+    providing a compatible interface for running large language models locally.
+
+    Args:
+        model: The OLLama model to use. Defaults to "llama2".
+        base_url: The base URL for the OLLama API endpoint.
+                 Defaults to "http://localhost:11434/v1".
+    """
+
     def __init__(self, *, model: str = "llama2", base_url: str = "http://localhost:11434/v1"):
         super().__init__(model=model, base_url=base_url, api_key="ollama")