Update the code-snippets in the documentation

docs/advanced/dependency-injection.md

@@ -127,7 +127,7 @@ Following the definition above, you can resolve the resilience pipelines using k
 
 <!-- snippet: di-keyed-services-use -->
 ```cs
-public class MyApi
+public sealed class MyApi
 {
     private readonly ResiliencePipeline _pipeline;
     private readonly ResiliencePipeline<HttpResponseMessage> _genericPipeline;

docs/advanced/performance.md

@@ -135,7 +135,7 @@ Creating a resilience pipeline can be resource-intensive, so it's advisable not
 
 <!-- snippet: perf-reuse-pipelines -->
 ```cs
-public class MyApi
+public sealed class MyApi
 {
     private readonly ResiliencePipelineRegistry<string> _registry;
 

docs/advanced/telemetry.md

@@ -37,15 +37,15 @@ The `MyTelemetryListener` and `MyMeteringEnricher` is implemented as:
 
 <!-- snippet: telemetry-listeners -->
 ```cs
-internal class MyTelemetryListener : TelemetryListener
+internal sealed class MyTelemetryListener : TelemetryListener
 {
     public override void Write<TResult, TArgs>(in TelemetryEventArguments<TResult, TArgs> args)
     {
         Console.WriteLine($"Telemetry event occurred: {args.Event.EventName}");
     }
 }
 
-internal class MyMeteringEnricher : MeteringEnricher
+internal sealed class MyMeteringEnricher : MeteringEnricher
 {
     public override void Enrich<TResult, TArgs>(in EnrichmentContext<TResult, TArgs> context)
     {

docs/chaos/index.md

@@ -300,7 +300,7 @@ In this approach, a helper extension method can be introduced to add a predefine
 <!-- snippet: chaos-extension -->
 ```cs
 // Options that represent the chaos pipeline
-public class MyChaosOptions
+public sealed class MyChaosOptions
 {
     public ChaosFaultStrategyOptions Fault { get; set; } = new()
     {

docs/strategies/hedging.md

@@ -658,7 +658,7 @@ A common use case is with [`DelegatingHandler`](https://learn.microsoft.com/aspn
 
 <!-- snippet: hedging-handler -->
 ```cs
-internal class HedgingHandler : DelegatingHandler
+internal sealed class HedgingHandler : DelegatingHandler
 {
     private readonly ResiliencePipeline<HttpResponseMessage> _pipeline;