fix entrypoint service

Change-Id: I7cc7f603d76edfc61b653b7688214b5d0ce2046b
diff --git a/horizon/files/entrypoint.sh b/horizon/files/entrypoint.sh
index be7a8ff..c5640d8 100644
--- a/horizon/files/entrypoint.sh
+++ b/horizon/files/entrypoint.sh
@@ -6,7 +6,7 @@
 
 salt-call --local --retcode-passthrough state.highstate
 
-{% for service in server.services %}
+{% for service in server.service %}
 service {{ service }} stop || true
 {% endfor %}
 
@@ -21,4 +21,4 @@
 
 {#-
 vim: syntax=jinja
--#}
\ No newline at end of file
+-#}