Fix DocumentationSet.Url for reporting first interesting url

Author: Mpdreamz

src/Elastic.Documentation.Navigation/Isolated/DocumentationSetNavigation.cs

@@ -109,14 +109,7 @@ public DocumentationSetNavigation(
 	public Uri Identifier { get; }
 
 	/// <inheritdoc />
-	public string Url
-	{
-		get
-		{
-			var rootUrl = HomeProvider.PathPrefix.TrimEnd('/');
-			return string.IsNullOrEmpty(rootUrl) ? "/" : $"{rootUrl}/";
-		}
-	}
+	public string Url => Index.Url;
 
 	/// <inheritdoc />
 	public string NavigationTitle => Index.NavigationTitle;

src/Elastic.Markdown/IO/DocumentationSet.cs

@@ -5,7 +5,6 @@
 using System.Collections.Concurrent;
 using System.Collections.Frozen;
 using System.IO.Abstractions;
-using System.Net.Mime;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 using Elastic.Documentation;

tests/Navigation.Tests/Isolation/DynamicUrlTests.cs

@@ -281,7 +281,7 @@ public void UrlRootChangesForTableOfContentsNavigation()
 		navigation.HomeProvider = new NavigationHomeProvider("/v2", navigation.NavigationRoot);
 
 		// Both TOC and file URLs should update
-		navigation.Url.Should().Be("/v2/");
+		navigation.Url.Should().Be("/v2/guides/api/reference/");
 		toc.Url.Should().Be("/v2/guides/api/reference/");
 		file.Url.Should().Be("/v2/guides/api/reference/");
 	}