doc: fix missing changelog corrections

There was a slight discrepancy between the build of 12.16.1 and what
landed on 12.x. This was only a couple spelling errors that didn't
get updated between machines I was working on. This change gets the
changelog up to date with what went out in the release vs what is
current on the 12.x release branch.

PR-URL: https://github.com/nodejs/node/pull/31854


Reviewed-By: Shelley Vohr <codebytere@gmail.com>
Reviewed-By: Beth Griggs <Bethany.Griggs@uk.ibm.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>