examples(lsdyna): fix contact force legend (#2280)

Author: joshuafairch

examples/14-lsdyna/00-lsdyna_operators.py

@@ -184,12 +184,12 @@
 FY = FC.select_component(1)
 FZ = FC.select_component(2)
 
-plt.plot(t_vals, FX.get_field({"interface": 19, "idtype": 0}).data, label="FX, slave")
-plt.plot(t_vals, FX.get_field({"interface": 19, "idtype": 1}).data, label="FX, master")
-plt.plot(t_vals, FY.get_field({"interface": 19, "idtype": 0}).data, label="FY, slave")
-plt.plot(t_vals, FY.get_field({"interface": 19, "idtype": 1}).data, label="FY, master")
-plt.plot(t_vals, FZ.get_field({"interface": 19, "idtype": 0}).data, label="FZ, slave")
-plt.plot(t_vals, FZ.get_field({"interface": 19, "idtype": 1}).data, label="FZ, master")
+plt.plot(t_vals, FX.get_field({"interface": 19, "idtype": 0}).data, label="FX, master")
+plt.plot(t_vals, FX.get_field({"interface": 19, "idtype": 1}).data, label="FX, slave")
+plt.plot(t_vals, FY.get_field({"interface": 19, "idtype": 0}).data, label="FY, master")
+plt.plot(t_vals, FY.get_field({"interface": 19, "idtype": 1}).data, label="FY, slave")
+plt.plot(t_vals, FZ.get_field({"interface": 19, "idtype": 0}).data, label="FZ, master")
+plt.plot(t_vals, FZ.get_field({"interface": 19, "idtype": 1}).data, label="FZ, slave")
 plt.xlabel("Time ({:s})".format(t_field.unit))
 plt.xlim([0, 10])
 plt.ylabel("Contact Force ({:s})".format(FX.get_field({"interface": 19, "idtype": 0}).unit))