I'm running OpenOffice 18.104.22.168 on Windows 7 (using the US-International Keyboard).
When I run a Spelling and Grammar check in Writer and come across a misspelled word, the error correction buttons in the actual Spelling and Grammar module are labeled "Correct", "Correct All", and "Always Correct". The help module and online documentation still refer to them as "Change" and "Change All". (As noted in an earlier, separate bug report, the "Always Correct" / "Always Change" button seems to be entirely undocumented and nonfunctional.)
Thanks for reporting this!
Help update was pushed for review to Gerrit:
Stanislav Horacek committed a patch related to this issue.
It has been pushed to "master":
fdo#75924 update button labels of spellcheck dialog
The patch should be included in the daily builds available at
http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
Affected users are encouraged to test the fix and report feedback.