FIX: style

jklymak · jklymak · commit e46ebc173a77 · 2021-03-21T15:10:40.000-07:00
diff --git a/doc/api/index.rst b/doc/api/index.rst
@@ -44,6 +44,7 @@ Alphabetical list of submodules:
 
 .. toctree::
    :maxdepth: 1
+   :class: multicol-toc
 
    matplotlib_configuration_api.rst
    afm_api.rst
