[fix] fix ee_z visibility for Inspire left hand

Author: Dingry

robosuite/models/assets/grippers/inspire_left_hand.xml

@@ -82,7 +82,7 @@
                 <site name="grip_site" pos="0 0 0" size="0.01 0.01 0.01" rgba="1 1 0 0" type="sphere" group="2"/>
                 <site name="ee_x" pos="0.1 0 0" size="0.005 .1"  quat="0.707105  0 0.707108 0 " rgba="1 0 0 0" type="cylinder" group="1"/>
                 <site name="ee_y" pos="0 0.1 0" size="0.005 .1" quat="0.707105 0.707108 0 0" rgba="0 1 0 0" type="cylinder" group="1"/>
-                <site name="ee_z" pos="0 0 0.1" size="0.005 .1" quat="1 0 0 0" rgba="0 0 1 1" type="cylinder" group="1"/>
+                <site name="ee_z" pos="0 0 0.1" size="0.005 .1" quat="1 0 0 0" rgba="0 0 1 0" type="cylinder" group="1"/>
                 <!-- This site was added for visualization. -->
                 <site name="grip_site_cylinder" pos="0 0 0" size="0.005 0.5" rgba="0 1 0 0.3" type="cylinder" group="1"/>
             </body>