Settings.md: clarify nav_fw_launch_timeout

Author: sensei-hacker

docs/Settings.md

@@ -3434,7 +3434,7 @@ Launch throttle - throttle to be set during launch sequence (pwm units)
 
 ### nav_fw_launch_timeout
 
-Maximum time for launch sequence to be executed. After this time LAUNCH mode will be turned off and regular flight mode will take over (ms)
+Maximum time for launch sequence to continue after throwing. After this time LAUNCH mode will end and regular flight mode will take over (ms)
 
 | Default | Min | Max |
 | --- | --- | --- |