[jazzy] Fix typo and composition link in README (backport #1833)

[mergify[bot]]

1. bandwith -> bandwidth
2. This link is not valid and doesn't really make sense (compile-time composition using ROS services?): https://docs.ros.org/en/rolling/Tutorials/Intermediate/Composition.html#compile-time-composition-using-ros-services). The section about compile-time composition is: https://docs.ros.org/en/rolling/Tutorials/Intermediate/Composition.html#compile-time-composition-with-hardcoded-nodes.

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   This is an automatic backport of pull request #1833 done by Mergify.