fix(examples): correct Hugging Face example prompt (#244)

Co-authored-by: David Kristek <David.Kristek@ibm.com>

examples/user/huggingface_agent.py

@@ -16,4 +16,4 @@
 agent = IBMGenAIAgent(credentials=creds, model="meta-llama/llama-2-70b-chat", params=params)
 
 agent.chat("Download the text from the given url", url="https://research.ibm.com/blog/analog-ai-chip-low-power")
-agent.chat("Summarize the downloaded text")
+agent.chat("Summarize the downloaded text and write it to the console")