net: ip-sysctl: Format possible value range of ioam6_id{,_wide} as bullet list

Format possible value range bounds of ioam6_id and ioam6_id_wide as
bullet list instead of running paragraph.

Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250701031300.19088-3-bagasdotme@gmail.com


Signed-off-by: Paolo Abeni <pabeni@redhat.com>