Update Workspaces.json

Author: navba-MSFT

specification/operationalinsights/resource-manager/Microsoft.OperationalInsights/preview/2020-03-01-preview/Workspaces.json

@@ -528,9 +528,9 @@
           "$ref": "#/definitions/WorkspaceProperties",
           "description": "Workspace properties."
         },
-        "etag": {
+        "eTag": {
           "type": "string",
-          "description": "The etag of the workspace."
+          "description": "The eTag of the workspace."
         }
       },
       "allOf": [