Fixed a reference

javiereguiluz · javiereguiluz · commit 5c041b116f15 · 2019-09-11T14:37:36.000+02:00
diff --git a/components/mailer.rst b/components/mailer.rst
@@ -181,4 +181,4 @@ Learn More
 To learn more about how to use the mailer component, refer to the
 :doc:`Symfony Framework Mailer documentation </mailer>`.
 
-.. _`Load Balancing`: https://en.wikipedia.org/wiki/Load_balancing_(computing)
+.. _`load balancing`: https://en.wikipedia.org/wiki/Load_balancing_(computing)
