DOC: add link to github to page (#85)

jklymak · web-flow · commit a43a985e99fb · 2021-11-16T13:48:09.000+01:00
diff --git a/docs/index.rst b/docs/index.rst
@@ -62,3 +62,9 @@ Handouts
          :alt: image of tips handout
 
       `Tips [pdf] <./handout-tips.pdf>`_
+
+Contribute
+**********
+
+Issues, suggestions, or pull-requests gratefully accepted at
+`matplotlib/cheatsheets <https://github.com/matplotlib/cheatsheets>`_
