Changed Wind description

Changed the range to -pi to +pi like in common.proto for Oreintation3d messages. Added a note for minding the conversation from openSCENARIO.

Signed-off-by: Markus Waldmann <Markus.Waldmann@stud.hs-kempten.de>

Author: Markus Waldmann

osi_environment.proto

@@ -428,7 +428,13 @@ message EnvironmentalConditions
     {
         // The target direction of the wind (not the origin direction) in the ground/xy-plane of the \c
         // world coordinate system. Corresponds to the heading/yaw angle. \c
-        // x-axis-direction is 0 rad. Unit [rad]. Range [0...2 pi[
+        // x-axis-direction is 0 rad.
+        //
+        // Unit: rad
+        //
+        // The preferred angular range is [-pi, pi]
+        //
+        // \note The range in openSCENARIO is Range [0...2 pi[. Mind the conversion.
         //
         optional Vector3d direction = 1;