add whitespace in between imports

Change-Id: If96f5a63d964f62232d84dbd996be48462f84d42
diff --git a/xos/genx/targets/service.xtarget b/xos/genx/targets/service.xtarget
index abb6db2..0db044e 100644
--- a/xos/genx/targets/service.xtarget
+++ b/xos/genx/targets/service.xtarget
@@ -16,7 +16,7 @@
 {%- for l in m.links -%}
 {% if l.peer not in proto.message_names -%}
 from core.models import {{ l.peer }} 
-{%- endif -%}
+{% endif -%}
 {%- endfor -%}
 {%- for b in m.bases -%}
 {%- if b!='PlCoreBase' and 'Mixin' not in b -%}