fix missing line

Author: dagoroz

schemas/2019-04-01/deploymentTemplate.json

@@ -221,6 +221,7 @@
                   { "$ref": "https://schema.management.azure.com/schemas/2018-07-01/Microsoft.Media.json#/resourceDefinitions/mediaServices_streamingPolicies" },
                   { "$ref": "https://schema.management.azure.com/schemas/2018-07-01/Microsoft.Media.json#/resourceDefinitions/mediaServices_transforms" },
                   { "$ref": "https://schema.management.azure.com/schemas/2018-07-01/Microsoft.Media.json#/resourceDefinitions/mediaServices_transforms_jobs" },
+                  { "$ref": "https://schema.management.azure.com/schemas/2016-09-01/Microsoft.Authorization.json#/resourceDefinitions/locks" },
                   { "$ref": "https://schema.management.azure.com/schemas/2016-09-01-preview/Microsoft.Solutions.json#/resourceDefinitions/applianceDefinitions" },
                   { "$ref": "https://schema.management.azure.com/schemas/2016-09-01-preview/Microsoft.Solutions.json#/resourceDefinitions/appliances" },
                   { "$ref": "https://schema.management.azure.com/schemas/2016-04-30-preview/Microsoft.Compute.json#/resourceDefinitions/disks" },