diff --git a/aider/help.py b/aider/help.py
index a08033042..1bc3cef21 100755
--- a/aider/help.py
+++ b/aider/help.py
@@ -57,24 +57,24 @@ def fname_to_url(filepath):
         return ""  # 'website' not found in the path
 
     # Extract the part of the path starting from 'website'
-    relevant_parts = parts[website_index + 1:]
+    relevant_parts = parts[website_index + 1 :]
 
     # Handle _includes directory
     if relevant_parts and relevant_parts[0] == "_includes":
         return ""
 
     # Join the remaining parts
-    url_path = '/'.join(relevant_parts)
+    url_path = "/".join(relevant_parts)
 
     # Handle index.md and other .md files
     if url_path.endswith(index):
-        url_path = url_path[:-len(index)]
+        url_path = url_path[: -len(index)]
     elif url_path.endswith(md):
-        url_path = url_path[:-len(md)] + ".html"
+        url_path = url_path[: -len(md)] + ".html"
 
     # Ensure the URL starts and ends with '/'
-    url_path = url_path.strip('/')
-    
+    url_path = url_path.strip("/")
+
     return f"https://aider.chat/{url_path}"
 
 
diff --git a/tests/help/test_help.py b/tests/help/test_help.py
index aaac959b9..b99491545 100644
--- a/tests/help/test_help.py
+++ b/tests/help/test_help.py
@@ -1,7 +1,7 @@
-import unittest
-from unittest.mock import MagicMock
 import os
+import unittest
 from pathlib import Path
+from unittest.mock import MagicMock
 
 import aider
 from aider.coders import Coder
@@ -58,36 +58,51 @@ class TestHelp(unittest.TestCase):
 
     def test_fname_to_url_unix(self):
         # Test relative Unix-style paths
-        self.assertEqual(fname_to_url('website/docs/index.md'), 'https://aider.chat/docs/')
-        self.assertEqual(fname_to_url('website/docs/usage.md'), 'https://aider.chat/docs/usage.html')
-        self.assertEqual(fname_to_url('website/_includes/header.md'), '')
+        self.assertEqual(fname_to_url("website/docs/index.md"), "https://aider.chat/docs/")
+        self.assertEqual(
+            fname_to_url("website/docs/usage.md"), "https://aider.chat/docs/usage.html"
+        )
+        self.assertEqual(fname_to_url("website/_includes/header.md"), "")
 
         # Test absolute Unix-style paths
-        self.assertEqual(fname_to_url('/home/user/project/website/docs/index.md'), 'https://aider.chat/docs/')
-        self.assertEqual(fname_to_url('/home/user/project/website/docs/usage.md'), 'https://aider.chat/docs/usage.html')
-        self.assertEqual(fname_to_url('/home/user/project/website/_includes/header.md'), '')
+        self.assertEqual(
+            fname_to_url("/home/user/project/website/docs/index.md"), "https://aider.chat/docs/"
+        )
+        self.assertEqual(
+            fname_to_url("/home/user/project/website/docs/usage.md"),
+            "https://aider.chat/docs/usage.html",
+        )
+        self.assertEqual(fname_to_url("/home/user/project/website/_includes/header.md"), "")
 
     def test_fname_to_url_windows(self):
         # Test relative Windows-style paths
-        self.assertEqual(fname_to_url(r'website\docs\index.md'), 'https://aider.chat/docs/')
-        self.assertEqual(fname_to_url(r'website\docs\usage.md'), 'https://aider.chat/docs/usage.html')
-        self.assertEqual(fname_to_url(r'website\_includes\header.md'), '')
+        self.assertEqual(fname_to_url(r"website\docs\index.md"), "https://aider.chat/docs/")
+        self.assertEqual(
+            fname_to_url(r"website\docs\usage.md"), "https://aider.chat/docs/usage.html"
+        )
+        self.assertEqual(fname_to_url(r"website\_includes\header.md"), "")
 
         # Test absolute Windows-style paths
-        self.assertEqual(fname_to_url(r'C:\Users\user\project\website\docs\index.md'), 'https://aider.chat/docs/')
-        self.assertEqual(fname_to_url(r'C:\Users\user\project\website\docs\usage.md'), 'https://aider.chat/docs/usage.html')
-        self.assertEqual(fname_to_url(r'C:\Users\user\project\website\_includes\header.md'), '')
+        self.assertEqual(
+            fname_to_url(r"C:\Users\user\project\website\docs\index.md"), "https://aider.chat/docs/"
+        )
+        self.assertEqual(
+            fname_to_url(r"C:\Users\user\project\website\docs\usage.md"),
+            "https://aider.chat/docs/usage.html",
+        )
+        self.assertEqual(fname_to_url(r"C:\Users\user\project\website\_includes\header.md"), "")
 
     def test_fname_to_url_edge_cases(self):
         # Test paths that don't contain 'website'
-        self.assertEqual(fname_to_url('/home/user/project/docs/index.md'), '')
-        self.assertEqual(fname_to_url(r'C:\Users\user\project\docs\index.md'), '')
+        self.assertEqual(fname_to_url("/home/user/project/docs/index.md"), "")
+        self.assertEqual(fname_to_url(r"C:\Users\user\project\docs\index.md"), "")
 
         # Test empty path
-        self.assertEqual(fname_to_url(''), '')
+        self.assertEqual(fname_to_url(""), "")
 
         # Test path with 'website' in the wrong place
-        self.assertEqual(fname_to_url('/home/user/website_project/docs/index.md'), '')
+        self.assertEqual(fname_to_url("/home/user/website_project/docs/index.md"), "")
+
 
 if __name__ == "__main__":
     unittest.main()