DOC: Update the documetation of homepage of website

sameshl · sameshl · commit 5a17c088b68f · 2019-07-15T23:20:39.000+05:30
It was very difficult to find the developer's guide on the matplotlib website. So added a pointer to https://matplotlib.org/devel/index.html on the homepage which makes it easy to find. closes #14754
diff --git a/doc/index.rst b/doc/index.rst
@@ -203,3 +203,8 @@ and `Pull requests`_ are tracked at Github too.
 .. _source code: https://github.com/matplotlib/matplotlib
 .. _issue tracker: https://github.com/matplotlib/matplotlib/issues
 .. _pull requests: https://github.com/matplotlib/matplotlib/pulls
+
+For contributers
+================
+
+Visit :doc:`/devel/index`.
