Merge branch '6.4' into 7.0

* 6.4:
  Minor RST syntax issue

Author: javiereguiluz

webhook.rst

@@ -190,4 +190,4 @@ Creating a Custom Webhook
     to generate the request parser and consumer files needed to create your own
     Webhook.
 
-_`MakerBundle`: https://symfony.com/doc/current/bundles/SymfonyMakerBundle/index.html
+.. _`MakerBundle`: https://symfony.com/doc/current/bundles/SymfonyMakerBundle/index.html