Update osi_sensordata.proto

Author: TimoHankeBMW

osi_sensordata.proto

@@ -38,7 +38,7 @@ message SensorData
     optional Identifier ego_vehicle_id = 4;
 
     // The mounting position of the sensor (origin and orientation of the sensor coordinate system);
-    // given in vehicle coordinates: origin is Vehicle::reference_point; the orientation is the equal to the orientation of the vehicle.
+    // given in vehicle coordinates: origin is Vehicle::reference_point; the orientation is equal to the orientation of the vehicle.
     // x-direction: longitudinal direction & positive in driving direction;
     // y-direction: lateral direction & positive to the left when looking orientated as a driver;
     // z-direction: perpendicular to x and z right hand system (up).