set_node_supply -> set_node_supplies in python min cost flow

ortools/graph/samples/balance_min_flow.py

@@ -70,7 +70,6 @@ def main():
 
     # [START print_solution]
     if status == smcf.OPTIMAL:
-        smcf.solve()
         print('Total cost = ', smcf.optimal_cost())
         print()
         for arc in range(smcf.num_arcs()):

ortools/graph/samples/simple_min_cost_flow_program.py

@@ -47,7 +47,7 @@ def main():
         start_nodes, end_nodes, capacities, unit_costs)
 
     # Add supply for each nodes.
-    smcf.set_nodes_supply(np.arange(0, len(supplies)), supplies)
+    smcf.set_nodes_supplies(np.arange(0, len(supplies)), supplies)
     # [END constraints]
 
     # [START solve]