Update runtime files
diff --git a/runtime/indent/treetop.vim b/runtime/indent/treetop.vim
index 2c6eecf..42ec1c8 100644
--- a/runtime/indent/treetop.vim
+++ b/runtime/indent/treetop.vim
@@ -34,5 +34,5 @@
     let ind -= shiftwidth()
   end
 
-  retur ind
+  return ind
 endfunction