Add empty line

Author: kdheepak

scripts/panvimdoc.lua

@@ -154,6 +154,7 @@ function Doc(body, metadata, variables)
       add(i .. ". *" .. v[1] .. "*" .. ": " .. v[2])
     end
   end
+  add("")
   add("Generated by panvimdoc <https://github.com/kdheepak/panvimdoc>")
   add("")
   add("vim:tw=78:ts=8:noet:ft=help:norl:")