review tweaks

Author: Hwurzburg

common/source/docs/common-3d-mapping.rst

@@ -75,9 +75,7 @@ executes immediately after the preceding waypoint command begins.
 
 **DO_TRIGG_DISTANCE** is the same as do-digicam-control (above) except
 the camera shutter will trigger every X meters.  Where X can be defined
-in the first column labelled "Dist (m)".  There is no
-mission command to stop the command from running so the shutter will be
-triggered continuously until the vehicle is switched out of AUTO mode.
+in the first column labelled "Dist (m)".
 
 **RETURN_TO_LAUNCH** should be the last command in the mission so the
 vehicles returns home.