Merge pull request python3statement#7 from brettcannon/patch-2

There are more than one project participating

Author: Carreau

_sections/30-projects.md

@@ -6,7 +6,7 @@ color: white
 style: center
 ---
 
-# Participating Project
+# Participating Projects
 
 - [IPython](https://ipython.org)
 - [Jupyter notebook](https://jupyter.org)