Apply suggestions from code review

Co-authored-by: Mario Prats <[email protected]>

Author: sjahr

Diff for: msgs/msg/TrajectoryExecutionInfo.msg

@@ -1,5 +1,5 @@
 # List of controllers to use when executing the trajectory
 string[] controller_names
-# If true, the trajectory is collision checked before execution.
+# MoveIt's Trajectory Execution Manager has the ability to monitor a trajectory for collisions while it's being executed. This is useful in dynamic environments where obstacles may change between the time the plan was computed and its execution, or even during execution. If this flag is set to true, MoveIt's online collision monitor will be enabled, which can stop the trajectory at any point during execution if a collision is predicted.
 bool trajectory_monitoring