Fix Example Depth to Laser scan documentation

[rj-indro]

Preliminary Checks

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Description

In the ZED Depth map to Laser Scan documentation it lists this command to launch:

ros2 launch zed_to_laser_scan zed_to_laser_scan.launch.py  camera_model:=<camera_model>

Which does not exist, however this command exists:

ros2 launch zed_depth_to_laser_scan zed_depth_to_laser_scan.launch.py  camera_model:=<camera_model>

There are a couple other points that the documentation lists the incorrect launch command through out as well.

I know it's a very small thing but it would help clear up confusion to fix this documentation.

Steps to Reproduce

View README in examples/zed_depth_to_laserscan

Expected Result

Slight change in launch commands

Actual Result

Incorrect launch command, most likely command name changed recently

ZED Camera model

ZED

Environment

N/A

Anything else?

No response