update links

cookbook/pocketflow-fastapi-hitl/utils/process_task.py

@@ -0,0 +1,16 @@
+import time
+
+def process_task(input_data):
+    """Minimal simulation of processing the input data."""
+    print(f"Processing: '{input_data[:50]}...'")
+    
+    # Simulate work
+    time.sleep(2)
+
+    processed_result = f"Processed: {input_data}"
+    print(f"Finished processing.")
+    return processed_result
+
+# We don't need a separate utils/call_llm.py for this minimal example,
+# but you would add it here if ProcessNode used an LLM.
+