zfsprops.7: update mandlock
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=f7e33bdbd6d1bdf9c3df8bba5abcf3399f957ac3
https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/commit/?id=7e59106e9c34458540f7d382d5b49071d1b7104f
Fixes: commit fb9baa9b2045a193a3caf0a46b5cac5ef7a84b61 ("zfsprops.8:
remove nbmand-not-used-on-Linux and pointer to mount(8)")
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #14765