Fixed email ext plugin name

Change-Id: I56a67622360c63110c89e8613bf9f353ab3eea4e
diff --git a/jenkins/client/init.yml b/jenkins/client/init.yml
index 58a53a6..07720fa 100644
--- a/jenkins/client/init.yml
+++ b/jenkins/client/init.yml
@@ -24,7 +24,7 @@
         description-setter: {}
         discard-old-build: {}
         docker-workflow: {}
-        email-ext-plugin: {}
+        email-ext: {}
         extended-choice-parameter: {}
         extensible-choice-parameter: {}
         gerrit-trigger: {}