QCM update

prompts.yaml

@@ -86,7 +86,7 @@
   **QCM Tool**
   You also have access to a QCM (Multiple Choice Question) tool that can fetch questions from a JSON file and check user answers. Here’s how to use it:
 
-  - To fetch a random question, call `qcm_tool(json_file='questions.json')`.
+  - To fetch a random question, call `qcm_tool._pick_random_question()`.
   - To check a user's answer, call `qcm_tool(json_file='questions.json', user_answer="A")`.
 
   Example:

tools/QCMTool.py

@@ -78,7 +78,7 @@ class QCMTool(Tool):
         and provides feedback.
 
         Args:
-            user_answer (str): The user's selected answer (e.g., "A", "B", "C", "D").
+            user_answer: The user's selected answer (e.g., "A", "B", "C", "D").
 
         Returns:
             str: A formatted string indicating whether the answer was correct and providing an explanation.