Summary

Add an Advanced tutorial: Smoothing keyboard teleop with a rate-limiter.

Rationale

Keyboard teleop often produces abrupt 0→max steps. A small Twist acceleration limiter improves smoothness/safety, especially in indoor labs and teaching setups.

What’s included

• New page: source/Tutorials/Advanced/rate_limited_teleop.rst
• Toctree entry in source/Tutorials/Advanced.rst

Acceptance criteria

• Page renders in the Advanced tutorials
• Style/wording aligns with existing ROS 2 docs