Minor update in HttpClientHandler.xml (dotnet#8672)

Author: Benoit Lecardonnel

xml/System.Net.Http/HttpClientHandler.xml

@@ -491,7 +491,7 @@ On .NET Core, the key usage attribute on the X509 certificate, if present, is re
 handler.ServerCertificateCustomValidationCallback = HttpClientHandler.DangerousAcceptAnyServerCertificateValidator;
 ```
 
- This gives <xref:System.Net.Http.HttpClientHandler> implementations a known object reference identity that expresses the developer's intention. If the object stored in the <xref:System.Net.Http.HttpClientHandler.DangerousAcceptAnyServerCertificateValidator%2A> property is reference equals to <xref:System.Net.Http.HttpClientHandler.DangerousAcceptAnyServerCertificateValidator%2A>, the runtime is able to entirely disable validation on a platform that would otherwise throw a <xref:System.PlatformNotSupportedException>.
+ This gives <xref:System.Net.Http.HttpClientHandler> implementations a known object reference identity that expresses the developer's intention. If the object stored in the <xref:System.Net.Http.HttpClientHandler.ServerCertificateCustomValidationCallback%2A> property is reference equals to <xref:System.Net.Http.HttpClientHandler.DangerousAcceptAnyServerCertificateValidator%2A>, the runtime is able to entirely disable validation on a platform that would otherwise throw a <xref:System.PlatformNotSupportedException>.
 
  As a side benefit, developers can use this property to make it easier for tools to flag the danger of disabling certificate validation, which makes it easier for developers to avoid shipping insecure applications.