fix typo in service class name

Change-Id: I88e88d9156d7bec0add9716d088e46dac6e3cf0b
diff --git a/metadata/service/master/pillar/composite/saltclass.yml b/metadata/service/master/pillar/composite/saltclass.yml
index 6dfab2e..832c7b7 100644
--- a/metadata/service/master/pillar/composite/saltclass.yml
+++ b/metadata/service/master/pillar/composite/saltclass.yml
@@ -1,5 +1,5 @@
 classes:
-- service.master.pillar.composite
+- service.salt.master.pillar.composite
 parameters:
   salt:
     master: