Incorrect example TelemetryInitializer

[cijothomas]

https://docs.microsoft.com/azure/azure-monitor/app/api-filtering-sampling#add-information-from-httpcontext
The example given above is incorrect:

1. It does not work in ASP.NET
2. It might work in ASP.NET Core, but its not thread safe and may cause application hangs. (Synchronize access to HttpContext microsoft/ApplicationInsights-dotnet#1313)

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Document Details

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• ID: 26b3e91f-c240-fffa-6ae9-d676deb7ad4c
• Version Independent ID: bbfa099e-3ed6-09ea-fbde-f2a3ed13139a
• Content: Filtering and preprocessing in the Application Insights SDK - Azure Monitor
• Content Source: articles/azure-monitor/app/api-filtering-sampling.md
• Service: azure-monitor
• Sub-service: application-insights
• GitHub Login: @AaronMaxwell
• Microsoft Alias: aaronmax

[MonikaReddy-MSFT]

Thanks for bringing this to our attention. We will investigate it further and update you shortly.

[AaronMaxwell]

Thanks for your dedication to our documentation.

An internal work item has been filed at the following location for scoping and prioritization.

https://dev.azure.com/mseng/TechnicalContent/_workitems/edit/1930460

[AaronMaxwell]

#please-close