nsis: copy tutor directory recursively

fixes: vim/vim-win32-installer#382
closes: #17630

Signed-off-by: RestorerZ <restorer@mail2k.ru>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/nsis/gvim.nsi b/nsis/gvim.nsi
index 8842dac..eef8a12 100644
--- a/nsis/gvim.nsi
+++ b/nsis/gvim.nsi
@@ -498,7 +498,7 @@
 	File ${VIMRT}\tools\*.*
 
 	SetOutPath $0\tutor
-	File /x Makefile /x *.info ${VIMRT}\tutor\*.*
+	File /r /x *.info ${VIMRT}\tutor\*.*
 SectionEnd
 
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