Update About-Command-Line-Tools.rst (ros2#5803)

Signed-off-by: Michael Carlstrom <[email protected]>

Author: InvincibleRMC

source/Concepts/Basic/About-Command-Line-Tools.rst

@@ -43,7 +43,6 @@ Examples of sub-commands that are available include:
 * ``test``: Run a ROS launch test
 * ``topic``: Introspect/publish ROS topics
 * ``trace``: Tracing tools to get information on ROS nodes execution (only available on Linux)
-* ``wtf``: An alias for ``doctor``
 
 Example
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