bug #5995 Update dev_environment.rst (gonzalovilaseca)

This PR was submitted for the 3.0 branch but it was merged into the 2.3 branch instead (closes #5995).

Discussion
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Update dev_environment.rst

As per the config docs:
delivery_whitelist: Used in combination with delivery_address. If set, emails matching any of these patterns will be delivered like normal, as well as being sent to delivery_address.

Commits
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fc6b0a6 Update dev_environment.rst

Author: wouterj

cookbook/email/dev_environment.rst

@@ -187,8 +187,8 @@ by adding the ``delivery_whitelist`` option:
         ));
 
 In the above example all email messages will be redirected to ``dev@example.com``,
-except messages sent to the ``admin@mydomain.com`` address or to any email
-address belonging to the domain ``specialdomain.com``, which will be delivered as normal.
+and messages sent to the ``admin@mydomain.com`` address or to any email
+address belonging to the domain ``specialdomain.com`` will be delivered as normal.
 
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