Update Documentation/admin-guide/sysctl/fs.rst

max_user_watches for epoll should say 1/25, rather than 1/32

Signed-off-by: Eric Curtin <ericcurtin17@gmail.com>
Link: https://lore.kernel.org/r/20210120132648.19046-1-ericcurtin17@gmail.com


Signed-off-by: Jonathan Corbet <corbet@lwn.net>