minor

OskarStark · OskarStark · commit 1b476a17e54a · 2021-03-11T14:06:48.000+01:00
diff --git a/mailer.rst b/mailer.rst
@@ -1218,7 +1218,7 @@ disable asynchronous delivery.
 
 .. versionadded:: 5.1
 
-    The `message_bus` option was introduced in Symfony 5.1.
+    The ``message_bus`` option was introduced in Symfony 5.1.
 
 Adding Tags and Metadata to Emails
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