fix 3 broken links

Author: mrbullwinkle

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

@@ -34,7 +34,7 @@ Let's see how such operations could be tracked.
 On a high level, the task is to create `RequestTelemetry` and set known properties. After the operation is finished, you track the telemetry. The following example demonstrates this task.
 
 ### HTTP request in Owin self-hosted app
-In this example, trace context is propagated according to the [HTTP Protocol for Correlation](https://github.com/dotnet/corefx/blob/master/src/System.Diagnostics.DiagnosticSource/src/HttpCorrelationProtocol.md). You should expect to receive headers that are described there.
+In this example, trace context is propagated according to the [HTTP Protocol for Correlation](https://github.com/dotnet/runtime/blob/master/src/libraries/System.Diagnostics.DiagnosticSource/src/HttpCorrelationProtocol.md). You should expect to receive headers that are described there.
 
 ```csharp
 public class ApplicationInsightsMiddleware : OwinMiddleware
@@ -113,7 +113,7 @@ public class ApplicationInsightsMiddleware : OwinMiddleware
 The HTTP Protocol for Correlation also declares the `Correlation-Context` header. However, it's omitted here for simplicity.
 
 ## Queue instrumentation
-While there are [W3C Trace Context](https://www.w3.org/TR/trace-context/) and [HTTP Protocol for Correlation](https://github.com/dotnet/corefx/blob/master/src/System.Diagnostics.DiagnosticSource/src/HttpCorrelationProtocol.md) to pass correlation details with HTTP request, every queue protocol has to define how the same details are passed along the queue message. Some queue protocols (such as AMQP) allow passing additional metadata and some others (such Azure Storage Queue) require the context to be encoded into the message payload.
+While there are [W3C Trace Context](https://www.w3.org/TR/trace-context/) and [HTTP Protocol for Correlation](https://github.com/dotnet/runtime/blob/master/src/libraries/System.Diagnostics.DiagnosticSource/src/HttpCorrelationProtocol.md) to pass correlation details with HTTP request, every queue protocol has to define how the same details are passed along the queue message. Some queue protocols (such as AMQP) allow passing additional metadata and some others (such Azure Storage Queue) require the context to be encoded into the message payload.
 
 > [!NOTE]
 > * **Cross-component tracing is not supported for queues yet** With HTTP, if your producer and consumer send telemetry to different Application Insights resources, Transaction Diagnostics Experience and Application Map show transactions and map end-to-end. In case of queues this is not supported yet. 
@@ -343,7 +343,7 @@ When you instrument message deletion, make sure you set the operation (correlati
 
 ### Dependency Types
 
-Application Insights uses dependency type to cusomize UI experiences. For queues it recognizes following types of `DependencyTelemetry` that improve [Transaction diagnostics experience](/azure/azure-monitor/app/transaction-diagnostics):
+Application Insights uses dependency type to customize UI experiences. For queues it recognizes following types of `DependencyTelemetry` that improve [Transaction diagnostics experience](/azure/azure-monitor/app/transaction-diagnostics):
 - `Azure queue` for Azure Storage Queues
 - `Azure Event Hubs` for Azure Event Hubs
 - `Azure Service Bus` for Azure Service Bus
@@ -479,4 +479,4 @@ Each Application Insights operation (request or dependency) involves `Activity`
 - See the [data model](../../azure-monitor/app/data-model.md) for Application Insights types and data model.
 - Report custom [events and metrics](../../azure-monitor/app/api-custom-events-metrics.md) to Application Insights.
 - Check out standard [configuration](configuration-with-applicationinsights-config.md#telemetry-initializers-aspnet) for context properties collection.
-- Check the [System.Diagnostics.Activity User Guide](https://github.com/dotnet/corefx/blob/master/src/System.Diagnostics.DiagnosticSource/src/ActivityUserGuide.md) to see how we correlate telemetry.
+- Check the [System.Diagnostics.Activity User Guide](https://github.com/dotnet/runtime/blob/master/src/libraries/System.Diagnostics.DiagnosticSource/src/ActivityUserGuide.md) to see how we correlate telemetry.