Update mailer.rst

andyexeter · web-flow · commit 963e6f8fd8ce · 2019-06-05T11:14:56.000+01:00
When defining twig paths the path must be the key and the namespace must be the value.

The current documentation throws an error.
diff --git a/mailer.rst b/mailer.rst
@@ -453,7 +453,7 @@ called ``css`` that points to the directory where ``email.css`` lives:
 
         paths:
             # point this wherever your css files live
-            css: '%kernel.project_dir%/assets/css'
+            '%kernel.project_dir%/assets/css': css
 
 .. _mailer-markdown:
 
