DOC correct headline level in contributor docs (scikit-learn#13959)

NicolasHug · jnothman · commit 869d7c4501c2 · 2019-07-29T10:27:26.000+10:00
diff --git a/doc/developers/contributing.rst b/doc/developers/contributing.rst
@@ -41,7 +41,7 @@ ticket to the
 also welcome to post feature requests or pull requests.
 
 Governance
-----------
+==========
 The decision making process and governance structure of scikit-learn is laid
 out in the governance document: :ref:`governance`.
 
