Apply suggestions from code review

Co-authored-by: Genevieve Warren <[email protected]>

Author: tarekgh

xml/System/TimeZoneInfo.xml

@@ -3415,13 +3415,13 @@ This method returns a new <xref:System.TimeZoneInfo> instance for each method ca
 
 ## Remarks
 
-This API is exclusively supported on .NET 6.0 and later versions. It is also supported when the application utilizes the ICU library, otherwise the API will fail.
+This API is exclusively supported on .NET 6 and later versions, and only when the application utilizes the ICU library.
 However, in .NET, the ICU library is not always used by default, particularly in the following scenarios:
 
-- When the application runs on an operating system that does not have the ICU library, and the app does not utilize the [APP-Local ICU](https://learn.microsoft.com/en-us/dotnet/core/extensions/globalization-icu#app-local-icu) feature.
-- When the [Globalization Invariant Mode](https://github.com/dotnet/runtime/blob/main/docs/design/features/globalization-invariant-mode.md) or [NLS mode](https://learn.microsoft.com/en-us/dotnet/core/extensions/globalization-icu#use-nls-instead-of-icu) is enabled on Windows OS.
+- When the application runs on an operating system that does not have the ICU library, and the app does not utilize the [app-local ICU](/dotnet/core/extensions/globalization-icu#app-local-icu) feature.
+- When the [globalization invariant mode](https://github.com/dotnet/runtime/blob/main/docs/design/features/globalization-invariant-mode.md) or [NLS mode](/dotnet/core/extensions/globalization-icu#use-nls-instead-of-icu) is enabled on Windows.
 
-If the application is running on a Windows OS version that lacks the ICU library, it has the option to opt-in and enable the usage of the ICU library through the [App-Local ICU](https://learn.microsoft.com/en-us/dotnet/core/extensions/globalization-icu#app-local-icu) feature.
+If the application is running on a Windows OS version that lacks the ICU library, it has the option to opt-in and enable the usage of the ICU library through the [app-local ICU](/dotnet/core/extensions/globalization-icu#app-local-icu) feature.
 
  ]]></format>
         </remarks>