always add newline at the end of a question (#53)

buster/chatbot.py

@@ -231,6 +231,10 @@ class Chatbot:
 
         logger.info(f"User Question:\n{question}")
 
+        # We make sure there is always a newline at the end of the question to avoid completing the question.
+        if not question.endswith("\n"):
+            question += "\n"
+
         matched_documents = self.rank_documents(
             documents=self.documents,
             query=question,