fw pos ctrl params: update defaults and bounds on wing geometry

src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c

@@ -1014,23 +1014,21 @@ PARAM_DEFINE_FLOAT(WEIGHT_GROSS, -1.0f);
  * This is used for limiting the roll setpoint near the ground. (if multiple wings, take the longest span)
  *
  * @unit m
- * @min 1.0
+ * @min 0.1
- * @max 15.0
  * @decimal 1
  * @increment 0.1
  * @group FW Geometry
  */
-PARAM_DEFINE_FLOAT(FW_WING_SPAN, 6.0);
+PARAM_DEFINE_FLOAT(FW_WING_SPAN, 3.0);
 
 /**
  * Height (AGL) of the wings when the aircraft is on the ground.
  *
- * This is used to constrain a minimum altitude below which we keep wings level to avoid wing tip strike. It's prudent
+ * This is used to constrain a minimum altitude below which we keep wings level to avoid wing tip strike. It's safer
  * to give a slight margin here (> 0m)
  *
  * @unit m
  * @min 0.0
- * @max 5.0
  * @decimal 1
  * @increment 1
  * @group FW Geometry