Merge pull request #30430 from dotnet/Rick-Anderson-patch-7

Update introduction-to-aspnet-core.md

aspnetcore/introduction-to-aspnet-core.md

@@ -204,7 +204,7 @@ To change the sample to run the `ExpandDefault` scenario, define the `ExpandDefa
 
 For more information on using [C# preprocessor directives](/dotnet/csharp/language-reference/preprocessor-directives/) to selectively compile sections of code, see [#define (C# Reference)](/dotnet/csharp/language-reference/preprocessor-directives/preprocessor-define) and [#if (C# Reference)](/dotnet/csharp/language-reference/preprocessor-directives/preprocessor-if).
 
-### Regions in sample code
+<!-- ### Regions in sample code
 
 Some sample apps contain sections of code surrounded by [#region](/dotnet/csharp/language-reference/preprocessor-directives/preprocessor-region) and [#endregion](/dotnet/csharp/language-reference/preprocessor-directives/preprocessor-endregion) C# directives. The documentation build system injects these regions into the rendered documentation topics.  
 
@@ -228,7 +228,7 @@ The preceding C# code snippet is referenced in the topic's markdown file with th
 
 You may safely ignore (or remove) the `#region` and `#endregion` directives that surround the code. Don't alter the code within these directives if you plan to run the sample scenarios described in the topic. Feel free to alter the code when experimenting with other scenarios.
 
-For more information, see [Contribute to the ASP.NET documentation: Code snippets](https://github.com/dotnet/AspNetCore.Docs/blob/main/CONTRIBUTING.md#code-snippets).
+For more information, see [Contribute to the ASP.NET documentation: Code snippets](https://github.com/dotnet/AspNetCore.Docs/blob/main/CONTRIBUTING.md#code-snippets). -->
 
 ## Breaking changes and security advisories