man: add v257 tag
authorYu Watanabe <watanabe.yu+github@gmail.com>
Mon, 13 May 2024 10:26:14 +0000 (19:26 +0900)
committerYu Watanabe <watanabe.yu+github@gmail.com>
Mon, 13 May 2024 10:53:51 +0000 (19:53 +0900)
commit13c8a3d9268dd280a90332e5d19d4364854bc8f4
tree6da0fccfeb9a93c55fb50ead58246b8ab21bb155
parentfa8f2a948cfb4992ea2f12c692a88dde312b107a
man: add v257 tag

Even though v256-final is not released yet, let's v257 tag now to make
not PRs for v257 conflict with each other.
man/version-info.xml