diff --git a/mkdocs.yaml b/mkdocs.yaml
index 8468b2bd9690d..b33998bb40849 100644
--- a/mkdocs.yaml
+++ b/mkdocs.yaml
@@ -119,3 +119,8 @@ extra_css:
 extra_javascript:
   - mkdocs/javascript/run_llm_widget.js
   - https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS_HTML
+
+# Makes the url format end in .html rather than act as a dir
+# So index.md generates as index.html and is available under URL /index.html
+# https://www.mkdocs.org/user-guide/configuration/#use_directory_urls
+use_directory_urls: false