change the publisher name (#143)

package.json

@@ -3,7 +3,7 @@
     "displayName": "Azure Terraform",
     "description": "VS Code extension for developing with Terraform on Azure",
     "version": "0.1.0",
-    "publisher": "Microsoft",
+    "publisher": "ms-azuretools",
     "aiKey": "ae482601-060f-4c71-8567-ebd5085483c9",
     "icon": "images/terraform.png",
     "repository": {