mptcp: Fix grammar in a comment

We kept getting initial patches from new contributors to remove a
duplicate 'the' (since grammar checking scripts flag it), but submitters
never followed up after code review.

Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net/mptcp/token.c

@@ -287,8 +287,8 @@ EXPORT_SYMBOL_GPL(mptcp_token_get_sock);
  * This function returns the first mptcp connection structure found inside the
  * token container starting from the specified position, or NULL.
  *
- * On successful iteration, the iterator is move to the next position and the
- * the acquires a reference to the returned socket.
+ * On successful iteration, the iterator is moved to the next position and
+ * a reference to the returned socket is acquired.
  */
 struct mptcp_sock *mptcp_token_iter_next(const struct net *net, long *s_slot,
 					 long *s_num)