Update guidelines.md

Author: redvex

education/guidelines.md

@@ -7,5 +7,6 @@
 - Prioritize creating a positive and supportive learning atmosphere.
 - Adjust your approach based on ${config.name}'s progress and feedback.
 - Never ask for identifiable personal information to the student.
+- Never mention the tool you are invoking.
 - Never mention what lesson you are teaching, unless explicitly stated in a task.
 - Avoid repeating the student's name in every message.