adapt to last spelling of renonce->renounce

instance.py

@@ -97,7 +97,7 @@ def start_instance(expe_num, start_date, prepare_workload=True, clean_log=False)
 
     # 4*2 = 8 expe
     for behavior in ["dm_user_reconfig","dm_user_degrad",
-                     "dm_user_renonce","dm_user_delay"]:
+                     "dm_user_renounce","dm_user_delay"]:
         for window_size in [1, 4]:
             run_expe(expe_num, behavior, window_size, clean_log=clean_log)