Move HTML templates to their own subdir.
diff --git a/Doc/conf.py b/Doc/conf.py
index ff073b1..84458ff 100644
--- a/Doc/conf.py
+++ b/Doc/conf.py
@@ -53,7 +53,7 @@
 html_last_updated_fmt = '%b %d, %Y'
 
 # Path to find HTML templates.
-templates_path = ['tools']
+templates_path = ['tools/templates']
 
 # Custom sidebar templates, filenames relative to this file.
 html_sidebars = {