fix max_wheel_velocity

Author: ottojo

curt_mini/models/curt_mini/properties.xacro

@@ -8,7 +8,7 @@
     <!-- robot limits -->
     <xacro:property name="max_effort" value="50.0" />
     <!-- joint limit for wheels, radian/second -->
-    <xacro:property name="max_velocity" value="20.0" />
+    <xacro:property name="max_wheel_velocity" value="20.0" />
     <xacro:property name="wheel_radius" value="0.13" />
     <xacro:property name="wheel_width" value="0.08" />