Revert dataset spelling change (Azure#17124)

Author: omrodrig

specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2021-10-01/costmanagement.json

@@ -1175,7 +1175,7 @@
           "description": "Has time period for pulling data for the report.",
           "$ref": "#/definitions/ReportConfigTimePeriod"
         },
-        "dataset": {
+        "dataSet": {
           "description": "Has definition for data in this report config.",
           "$ref": "#/definitions/ReportConfigDataset"
         },

specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2021-10-01/examples/PrivateView.json

@@ -16,7 +16,7 @@
           "query": {
             "type": "Usage",
             "timeframe": "MonthToDate",
-            "dataset": {
+            "dataSet": {
               "granularity": "Daily",
               "aggregation": {
                 "totalCost": {

specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2021-10-01/examples/PrivateViewCreateOrUpdate.json

@@ -9,7 +9,7 @@
         "query": {
           "type": "Usage",
           "timeframe": "MonthToDate",
-          "dataset": {
+          "dataSet": {
             "granularity": "Daily",
             "aggregation": {
               "totalCost": {
@@ -71,7 +71,7 @@
           "query": {
             "type": "Usage",
             "timeframe": "MonthToDate",
-            "dataset": {
+            "dataSet": {
               "granularity": "Daily",
               "aggregation": {
                 "totalCost": {
@@ -132,7 +132,7 @@
           "query": {
             "type": "Usage",
             "timeframe": "MonthToDate",
-            "dataset": {
+            "dataSet": {
               "granularity": "Daily",
               "aggregation": {
                 "totalCost": {

specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2021-10-01/examples/PrivateViewList.json

@@ -17,7 +17,7 @@
               "query": {
                 "type": "Usage",
                 "timeframe": "MonthToDate",
-                "dataset": {
+                "dataSet": {
                   "granularity": "Daily",
                   "aggregation": {
                     "totalCost": {
@@ -76,7 +76,7 @@
               "query": {
                 "type": "Usage",
                 "timeframe": "LastMonthToDate",
-                "dataset": {
+                "dataSet": {
                   "granularity": "Daily",
                   "aggregation": {
                     "totalCost": {

specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2021-10-01/examples/ViewByResourceGroup.json

@@ -17,7 +17,7 @@
           "query": {
             "type": "Usage",
             "timeframe": "MonthToDate",
-            "dataset": {
+            "dataSet": {
               "granularity": "Daily",
               "aggregation": {
                 "totalCost": {

specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2021-10-01/examples/ViewCreateOrUpdateByResourceGroup.json

@@ -10,7 +10,7 @@
         "query": {
           "type": "Usage",
           "timeframe": "MonthToDate",
-          "dataset": {
+          "dataSet": {
             "granularity": "Daily",
             "aggregation": {
               "totalCost": {
@@ -72,7 +72,7 @@
           "query": {
             "type": "Usage",
             "timeframe": "MonthToDate",
-            "dataset": {
+            "dataSet": {
               "granularity": "Daily",
               "aggregation": {
                 "totalCost": {
@@ -133,7 +133,7 @@
           "query": {
             "type": "Usage",
             "timeframe": "MonthToDate",
-            "dataset": {
+            "dataSet": {
               "granularity": "Daily",
               "aggregation": {
                 "totalCost": {

specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2021-10-01/examples/ViewListByResourceGroup.json

@@ -18,7 +18,7 @@
               "query": {
                 "type": "Usage",
                 "timeframe": "MonthToDate",
-                "dataset": {
+                "dataSet": {
                   "granularity": "Daily",
                   "aggregation": {
                     "totalCost": {
@@ -77,7 +77,7 @@
               "query": {
                 "type": "Usage",
                 "timeframe": "LastMonthToDate",
-                "dataset": {
+                "dataSet": {
                   "granularity": "Daily",
                   "aggregation": {
                     "totalCost": {