reverted ms.date

Author: KingdomOfEnds

articles/time-series-insights/time-series-insights-manage-reference-data-csharp.md

@@ -9,7 +9,7 @@ manager: cshankar
 ms.devlang: csharp
 ms.workload: big-data
 ms.topic: conceptual
-ms.date: 12/02/2019
+ms.date: 10/03/2019
 ms.custom: seodec18
 ---
 
@@ -241,4 +241,4 @@ namespace TimeSeriesInsightsReferenceDataSampleApp
 
 ## Next steps
 
-- Read the [reference data API](https://docs.microsoft.com/rest/api/time-series-insights/ga-reference-data-api).
+- Read the [reference data API](https://docs.microsoft.com/rest/api/time-series-insights/ga-reference-data-api).