fix spell error and missing description

Author: chchen3

specification/reservations/resource-manager/Microsoft.Capacity/stable/2022-11-01/reservations.json

@@ -3050,7 +3050,7 @@
     },
     "Error": {
       "type": "object",
-      "description": "Error inofrmation",
+      "description": "Error information",
       "properties": {
         "error": {
           "$ref": "#/definitions/ExtendedErrorInfo"
@@ -3444,6 +3444,7 @@
     },
     "ChangeDirectoryRequest": {
       "type": "object",
+      "description": "Request body for change directory of a reservation.",
       "properties": {
         "destinationTenantId": {
           "description": "Tenant id GUID that reservation order is to be transferred to",