ensure we lookup snippets anchored to the root

Author: Mpdreamz

src/Elastic.Markdown/IO/MarkdownFile.cs

@@ -200,6 +200,10 @@ private void ReadDocumentInstructions(MarkdownDocument document)
 		else if (Title.AsSpan().ReplaceSubstitutions(subs, out var replacement))
 			Title = replacement;
 
+		if (RelativePath.Contains("esql-functions-operators"))
+		{
+
+		}
 		var toc = GetAnchors(_set, MarkdownParser, YamlFrontMatter, document, subs, out var anchors);
 
 		_tableOfContent.Clear();
@@ -225,7 +229,7 @@ public static List<PageTocItem> GetAnchors(
 		var includes = includeBlocks
 			.Select(i =>
 			{
-				var path = i.IncludePathRelative;
+				var path = i.IncludePathFromSourceDirectory;
 				if (path is null
 					|| !set.FlatMappedFiles.TryGetValue(path, out var file)
 					|| file is not SnippetFile snippet)

src/Elastic.Markdown/Myst/Directives/IncludeBlock.cs

@@ -35,7 +35,7 @@ public class IncludeBlock(DirectiveBlockParser parser, ParserContext context) :
 	public YamlFrontMatter? FrontMatter { get; } = context.FrontMatter;
 
 	public string? IncludePath { get; private set; }
-	public string? IncludePathRelative { get; private set; }
+	public string? IncludePathFromSourceDirectory { get; private set; }
 
 	public bool Found { get; private set; }
 
@@ -70,7 +70,7 @@ private void ExtractInclusionPath(ParserContext context)
 			includeFrom = DocumentationSourcePath.FullName;
 
 		IncludePath = Path.Combine(includeFrom, includePath.TrimStart('/'));
-		IncludePathRelative = Path.GetRelativePath(includeFrom, IncludePath);
+		IncludePathFromSourceDirectory = Path.GetRelativePath(DocumentationSourcePath.FullName, IncludePath);
 		if (FileSystem.File.Exists(IncludePath))
 			Found = true;
 		else