Optical flow doc- clarify that integrated_xgryo etc are fields in OPT…

…ICAL_FLOW_RAD (#3526)

en/sensor/optical_flow.md

@@ -39,11 +39,11 @@ The approach used for fusing sensor data and any offsets from the center of the
 
 ### Scale Factor
 
-For pure rotations the `integrated_xgyro` and `integrated_x` (respectively `integrated_ygyro` and `integrated_y`) have to be the same.
+For pure rotations the `OPTICAL_FLOW_RAD.integrated_xgyro` and `OPTICAL_FLOW_RAD.integrated_x` (respectively `integrated_ygyro` and `integrated_y`) have to be the same.
 If this is not the case, the optical flow scale factor can be adjusted using [SENS_FLOW_SCALE](../advanced_config/parameter_reference.md#SENS_FLOW_SCALE).
 
 :::tip
-The low resolution of common optical flow sensors can cause slow oscillations when hovering at a high altitude above ground (> 20m). 
+The low resolution of common optical flow sensors can cause slow oscillations when hovering at a high altitude above ground (> 20m).
 Reducing the optical flow scale factor can improve the situation.
 :::