Add license and pipeline tag

This PR adds the license information (Apache 2.0, inferred from the GitHub repo) to the model card metadata and specifies the pipeline tag as `text-generation` for better discoverability on the Hugging Face Hub.

README.md

@@ -9,6 +9,8 @@ tags:
 - verification
 - math reasoning
 - code verification
+license: apache-2.0
+pipeline_tag: text-generation
 ---
 
 # Model Card for ThinkPRM-1.5B
@@ -60,7 +62,8 @@ llm = LLM(model=model_id, max_model_len=16384)
 
 # Example problem and solution
 problem = "Solve for x: 2x + 3 = 7"
-prefix = "Step 1: Subtract 3 from both sides: 2x = 4\nStep 2: Divide by 2: x = 1"
+prefix = "Step 1: Subtract 3 from both sides: 2x = 4
+Step 2: Divide by 2: x = 1"
 
 # Format the prompt
 prompt = f"""You are given a math problem and a proposed step-by-step solution:
@@ -78,7 +81,8 @@ Review and critique each step in the proposed solution to determine whether each
 
 prompt = tokenizer.apply_chat_template([
     {'role': "user", "content": prompt}
-], tokenize=False, add_generation_prompt=True) + "\nLet's verify step by step:"
+], tokenize=False, add_generation_prompt=True) + "
+Let's verify step by step:"
 
 # Set sampling parameters
 sampling_params = SamplingParams(