Dont exclude directories starting with underscore (#493)

Author: SimonCropp

Diff for: src/Directory.Build.props

@@ -2,7 +2,7 @@
 <Project>
   <PropertyGroup>
     <NoWarn>CS1591</NoWarn>
-    <Version>24.4.0</Version>
+    <Version>24.5.0</Version>
     <AssemblyVersion>1.0.0</AssemblyVersion>
     <PackageTags>Markdown, Snippets, mdsnippets, documentation, MarkdownSnippets</PackageTags>
     <Description>Extracts snippets from code files and merges them into markdown documents.</Description>

Diff for: src/MarkdownSnippets/Reading/Exclusions/DefaultDirectoryExclusions.cs

@@ -5,8 +5,7 @@ public static class DefaultDirectoryExclusions
     public static bool ShouldExcludeDirectory(string path)
     {
         var suffix = Path.GetFileName(path).ToLowerInvariant();
-        return suffix.StartsWith("_") ||
-               suffix.StartsWith(".") ||
+        return suffix.StartsWith(".") ||
                suffix is
                    "packages" or
                    "node_modules" or