website: fix empty SA and EN section in 14.1R and earlier relnotes

Relnotes of 14.1, 14.0, 13.3, 13.2, 13.1 and 13.0 updated

Reported by: Christian Ullrich <chris@chrullrich.net>

Reviewed by: ziaee
Approved by: ziaee
Differential Revision: https://reviews.freebsd.org/D55706
PR: 282330