Improved Jenkins SMTP settings

Change-Id: Ie0789be03535f8d6244286f2a3cb45a7f434526c
diff --git a/README.rst b/README.rst
index 7dc19af..f9bfbe9 100644
--- a/README.rst
+++ b/README.rst
@@ -611,6 +611,16 @@
           ssl: false
           reply_to: reply_to@address.com
 
+Jenkins admin user email enforcement from client
+
+.. code-block:: yaml
+
+    jenkins:
+      client:
+        smtp:
+          admin_email: "My Jenkins <jenkins@myserver.com>"
+
+
 Slack plugin configuration
 
 .. code-block:: yaml