Apply suggestions from code review

Co-authored-by: Maarten Balliauw <[email protected]>

Author: wcabus

src/content/docs/identityserver/samples/basics.md

@@ -128,7 +128,7 @@ Key takeaways:
 :::note
 This sample is only relevant if you're using .NET 8 or lower.
 
-[.NET 9 has support for PAR built-in][ms-learn-par], and the ASP.NET OIDC authentication handler will automatically use 
+[.NET 9 has support for PAR built-in][ms-learn-par], and the ASP.NET Core OIDC authentication handler will automatically use 
 PAR when the authority supports it, based on the discovery metadata.  
 :::
 

src/content/docs/identityserver/tokens/par.md

@@ -60,7 +60,7 @@ authorization code which the client subsequently exchanges for tokens.
 
 If you're building an ASP.NET Core application using .NET 9 or higher, using PAR is very straightforward:
 
-```cs {13-15}
+```csharp {13-15}
 // Program.cs
 builder.Services
     .AddAuthentication(options =>