updated model name

Author: praneet22

aml_config/security_config.json

@@ -8,7 +8,7 @@
     "remote_vm_ip" : "<>",
     "experiment_name" : "devops-ai-demo",
     "aml_cluster_name" : "aml-compute",
-    "model_name" : "sklearn_regression_model2.pkl",
+    "model_name" : "sklearn_regression_model.pkl",
     "vnet_resourcegroup_name" : "<>", 
     "vnet_name" : "<>", 
     "subnet_name" : "<>"