org.el (org-copy-subtree): Correct typo

lisp/org.el

@@ -8458,7 +8458,7 @@ This is a short-hand for marking the subtree and then cutting it."
   (org-copy-subtree n 'cut))
 
 (defun org-copy-subtree (&optional n cut force-store-markers nosubtrees)
-  "Copy the current subtree it in the clipboard.
+  "Copy the current subtree into the clipboard.
 With prefix arg N, copy this many sequential subtrees.
 This is a short-hand for marking the subtree and then copying it.
 If CUT is non-nil, actually cut the subtree.