Update README with Hugging Face model link

Agent-Logs-Url: https://github.com/nmdra/Assignment-Metadata-Extractor/sessions/7e90e2db-592e-4cf2-8be4-9700e37bd061

Co-authored-by: nmdra <73674803+nmdra@users.noreply.github.com>

Author: Copilot

README.md

@@ -1,6 +1,10 @@
 # Assignment-Metadata-Extractor
 
-A lightweight, locally hosted LLM pipeline that extracts and normalizes unstructured student assignment text into a strict JSON schema using a fine-tuned SmolLM2-135M model served via Ollama.
+A lightweight, locally hosted LLM pipeline that extracts and normalizes unstructured student assignment text into a strict JSON schema using a fine-tuned SmolLM2 model served via Ollama.
+
+## Model
+
+Hugging Face model: https://huggingface.co/nimendraai/SmolLM2-360M-Assignment-Metadata-Extractor
 
 ## Training (Part 1)