Replace deprecated function with the new one

cderici · cderici · commit d9bb07968e72 · 2023-07-14T10:57:15.000-06:00
diff --git a/docs/conf.py b/docs/conf.py
@@ -300,4 +300,4 @@
 #texinfo_no_detailmenu = False
 
 def setup(app):
-    app.add_stylesheet('custom.css')
+    app.add_css_file('custom.css')
