Apply suggestions from code review

Author: JamesNK

src/Http/Http.Extensions/src/DisableHttpMetricsAttribute.cs

@@ -6,7 +6,7 @@
 namespace Microsoft.AspNetCore.Http;
 
 /// <summary>
-/// Specifies that an HTTP duration metric is disabled for an endpoint.
+/// Specifies that HTTP request duration metrics is disabled for an endpoint.
 /// </summary>
 [AttributeUsage(AttributeTargets.Method | AttributeTargets.Class)]
 public sealed class DisableHttpMetricsAttribute : Attribute, IDisableHttpMetricsMetadata

src/Http/Http.Extensions/src/HttpMetricsEndpointConventionBuilderExtensions.cs

@@ -11,7 +11,7 @@ namespace Microsoft.AspNetCore.Builder;
 public static class HttpMetricsEndpointConventionBuilderExtensions
 {
     /// <summary>
-    /// Specifies that an HTTP duration metric is disabled for an endpoint.
+    /// Specifies that HTTP request duration metrics is disabled for an endpoint.
     /// </summary>
     /// <typeparam name="TBuilder">The type of endpoint convention builder.</typeparam>
     /// <param name="builder">The endpoint convention builder.</param>

src/Http/Http.Features/src/IHttpMetricsTagsFeature.cs

@@ -4,7 +4,7 @@
 namespace Microsoft.AspNetCore.Http.Features;
 
 /// <summary>
-/// Provides access to tags added to the metrics HTTP request duration counter. This feature isn't set if the counter isn't enabled.
+/// Provides access to tags added to HTTP request duration metrics. This feature isn't set if the counter isn't enabled.
 /// </summary>
 public interface IHttpMetricsTagsFeature
 {
@@ -15,7 +15,7 @@ public interface IHttpMetricsTagsFeature
 
     // MetricsDisabled was added after the initial release of this interface and is intentionally a DIM property.
     /// <summary>
-    /// Gets or sets a flag that disables recording HTTP request duration counter for the current HTTP request.
+    /// Gets or sets a flag that disables recording HTTP request duration metrics for the current HTTP request.
     /// </summary>
     public bool MetricsDisabled { get; set; }
 }