Repair broken links (#36558)

Author: TimShererWithAquent

aspnetcore/blazor/host-and-deploy/webassembly/bundle-caching-and-integrity-check-failures.md

@@ -152,7 +152,7 @@ Placeholders:
 > 
 > If you have any cause for concern that checksum validation isn't secure enough in your environment, consult your organization's security leadership for guidance.
 >
-> For more information, see [Overview of threat protection by Microsoft Defender Antivirus](/microsoft-365/business-premium/m365bp-threats-detected-defender-av).
+> For more information, see [Microsoft Defender for Business](/defender-business/).
 
 :::moniker-end
 

aspnetcore/grpc/performance.md

@@ -241,7 +241,7 @@ Server streaming calls don't have a request stream. This means that the only way
 
 Always dispose streaming calls once they're no longer needed. The type returned when starting streaming calls implements `IDisposable`. Disposing a call once it is no longer needed ensures it is stopped and all resources are cleaned up.
 
-In the following example, the [using declaration](/dotnet/csharp/language-reference/proposals/csharp-8.0/using#using-declaration) on the `AccumulateCount()` call ensures it's always disposed if an unexpected error occurs.
+In the following example, the [using declaration](/dotnet/csharp/language-reference/keywords/using-directive) on the `AccumulateCount()` call ensures it's always disposed if an unexpected error occurs.
 
 [!code-csharp[](~/grpc/performance/dispose-streaming-call.cs?highlight=2)]