fix links

Author: mrbullwinkle

articles/azure-monitor/app/custom-operations-tracking.md

@@ -6,7 +6,7 @@ ms.subservice: application-insights
 ms.topic: conceptual
 author: mrbullwinkle
 ms.author: mbullwin
-ms.date: 06/30/2017
+ms.date: 11/26/2019
 
 ms.reviewer: sergkanz
 ---
@@ -26,7 +26,7 @@ This document provides guidance on how to track custom operations with the Appli
 ## Overview
 An operation is a logical piece of work run by an application. It has a name, start time, duration, result, and a context of execution like user name, properties, and result. If operation A was initiated by operation B, then operation B is set as a parent for A. An operation can have only one parent, but it can have many child operations. For more information on operations and telemetry correlation, see [Azure Application Insights telemetry correlation](correlation.md).
 
-In the Application Insights .NET SDK, the operation is described by the abstract class [OperationTelemetry](https://github.com/Microsoft/ApplicationInsights-dotnet/blob/develop/src/Microsoft.ApplicationInsights/Extensibility/Implementation/OperationTelemetry.cs) and its descendants [RequestTelemetry](https://github.com/Microsoft/ApplicationInsights-dotnet/blob/develop/src/Microsoft.ApplicationInsights/DataContracts/RequestTelemetry.cs) and [DependencyTelemetry](https://github.com/Microsoft/ApplicationInsights-dotnet/blob/develop/src/Microsoft.ApplicationInsights/DataContracts/DependencyTelemetry.cs).
+In the Application Insights .NET SDK, the operation is described by the abstract class [OperationTelemetry](https://github.com/microsoft/ApplicationInsights-dotnet/blob/7633ae849edc826a8547745b6bf9f3174715d4bd/BASE/src/Microsoft.ApplicationInsights/Extensibility/Implementation/OperationTelemetry.cs) and its descendants [RequestTelemetry](https://github.com/microsoft/ApplicationInsights-dotnet/blob/7633ae849edc826a8547745b6bf9f3174715d4bd/BASE/src/Microsoft.ApplicationInsights/DataContracts/RequestTelemetry.cs) and [DependencyTelemetry](https://github.com/microsoft/ApplicationInsights-dotnet/blob/7633ae849edc826a8547745b6bf9f3174715d4bd/BASE/src/Microsoft.ApplicationInsights/DataContracts/DependencyTelemetry.cs).
 
 ## Incoming operations tracking 
 The Application Insights web SDK automatically collects HTTP requests for ASP.NET applications that run in an IIS pipeline and all ASP.NET Core applications. There are community-supported solutions for other platforms and frameworks. However, if the application isn't supported by any of the standard or community-supported solutions, you can instrument it manually.