Fix typos in samples

samples/HealthChecksSample/LivenessProbeStartup.cs

@@ -43,7 +43,7 @@ namespace HealthChecksSample
             //
             // In this example, the liveness check will us an 'identity' check that always returns healthy.
             //
-            // In this example, the readiness check will run all registered checks, include a check with an 
+            // In this example, the readiness check will run all registered checks, include a check with a 
             // long initialization time (15 seconds).
 
 

samples/HealthChecksSample/ManagementPortStartup.cs

@@ -34,7 +34,7 @@ namespace HealthChecksSample
             // to the specified port. This is typically used in a container environment where you can expose
             // a port for monitoring services to have access to the service.
             // - In this case the management is configured in the launchSettings.json and passed through 
-            //  and environment variable
+            //  an environment variable
             // - Additionally, the server is also configured to listen to requests on the management port.
             app.UseHealthChecks("/health", port: Configuration["ManagementPort"]);
 

samples/HealthChecksSample/SlowDependencyHealthCheck.cs

@@ -4,7 +4,7 @@ using Microsoft.Extensions.Diagnostics.HealthChecks;
 
 namespace HealthChecksSample
 {
-    // Simulates a health check for an  application dependency that takes a while to initialize.
+    // Simulates a health check for an application dependency that takes a while to initialize.
     // This is part of the readiness/liveness probe sample.
     public class SlowDependencyHealthCheck : IHealthCheck
     {