fix typo

Change-Id: I1a7ea68d397db856c72edfad714715e049a9960b
diff --git a/linux/system/repo_local/mcp/openstack.yml b/linux/system/repo_local/mcp/openstack.yml
index 29329d1..83bb29b 100644
--- a/linux/system/repo_local/mcp/openstack.yml
+++ b/linux/system/repo_local/mcp/openstack.yml
@@ -15,7 +15,7 @@
           architectures: amd64
           key_url: "http://${_param:local_repo_url}/public.gpg"
           pin:
-          - pin: 'release a=m${_param:openstack_version}-hotfix'
+          - pin: 'release a=${_param:openstack_version}-hotfix'
             priority: 1100
             package: '*'
         mirantis_openstack_security: