Fix camera fov comment since full fov is stored

include/assimp/camera.h

@@ -137,7 +137,7 @@ struct aiCamera
      */
     C_STRUCT aiVector3D mLookAt;
 
-    /** Half horizontal field of view angle, in radians.
+    /** Horizontal field of view angle, in radians.
      *
      *  The field of view angle is the angle between the center
      *  line of the screen and the left or right border.