docs: linter

docs/en/selfcheck.md

@@ -19,7 +19,7 @@ Description of some checks:
 * FCU – checks for proper connection with the flight controller;
 * IMU – checks whether the data from from IMU is sane;
 * Local position – checks presence of local position data;
-* Velocity estimation – checks whether drone velocity estimation is sane(**Offboard flight is not to be performed if this check fails!**);
+* Velocity estimation – checks whether drone velocity estimation is sane(**autonomous flight is not to be performed if this check fails!**);
 * Global position (GPS) — checks for presence of global position data (GPS module is required for this check);
 * Camera — checks for proper operation of the Raspberry camera.
 * ArUco — checks whether [ArUco](aruco.md) detection is working