Fix "Futher readings" section name

806709aa · Brandon T. Willard · Brandon T. Willard · 0091bc3a · 806709aa
--- a/doc/tutorial/index.rst
+++ b/doc/tutorial/index.rst
@@ -63,8 +63,8 @@ Advanced configuration and debugging
    nan_tutorial
    profiling

-Further readings
----------------
+Further reading
+---------------

 .. toctree::