fix windows test

Author: Mpdreamz

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

@@ -4,6 +4,7 @@
 
 using System.Diagnostics;
 using System.IO.Abstractions;
+using Elastic.Documentation.Extensions;
 using Elastic.Documentation.Navigation.Assembler;
 
 namespace Elastic.Documentation.Navigation.Isolated;
@@ -50,6 +51,7 @@ string DetermineUrl()
 
 				// Remove extension while preserving the directory path
 				var relativePath = relativeToContainer ? args.RelativePathToTableOfContents : args.RelativePathToDocumentationSet;
+				relativePath = relativePath.OptionalWindowsReplace();
 				var path = relativePath.EndsWith(".md", StringComparison.OrdinalIgnoreCase)
 					? relativePath[..^3]  // Remove last 3 characters (.md)
 					: relativePath;

tests/Elastic.Markdown.Tests/DocSet/NestedTocTests.cs

@@ -2,6 +2,7 @@
 // Elasticsearch B.V licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information
 
+using Elastic.Documentation.Extensions;
 using Elastic.Documentation.Navigation;
 using Elastic.Documentation.Navigation.Isolated;
 using Elastic.Markdown.IO;
@@ -36,7 +37,7 @@ public void InjectsNestedTocsIntoDocumentationSet()
 		index.Should().NotBeNull();
 		var fileNav = index as FileNavigationLeaf<MarkdownFile>;
 		fileNav.Should().NotBeNull();
-		fileNav.Model.RelativePath.Should().Be("development/index.md");
+		fileNav.Model.RelativePath.OptionalWindowsReplace().Should().Be("development/index.md");
 
 	}
 }