runtime(doc): vimtutor starts Vim in nocompatible mode

closes: #17593

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/vimtutor.man b/runtime/doc/vimtutor.man
index c4cbeaa..64d0a43 100644
--- a/runtime/doc/vimtutor.man
+++ b/runtime/doc/vimtutor.man
@@ -19,7 +19,7 @@
        Vimtutor only opens temporary copies of the original tutor files, there
        is no danger of overwriting the lessons.
 
-       Vim is always started in Vi compatible mode.
+       Vim is always started in Vi nocompatible mode.
 
 OPTIONS
        -l, --language ISO639