templates: fix syntax (import is a reserved keyword…)

templates/ripe.j2

@@ -1,4 +1,3 @@
-remarks:
 remarks:    # {{ description }}
-export:     to AS{{ neighbor_as }} announce {{ export }}
-import:     from AS{{ neighbor_as }} action pref=100; accept {{ import }}
+export:     to AS{{ neighbor_as }} announce {{ export_as }}
+import:     from AS{{ neighbor_as }} action pref=100; accept {{ import_as }}