configure.html: comment support in .mvn/maven.config says "since 3.9.0", actually fixed in 3.9.3

### Affected version

3.9.0

### Bug description

The NOTICE on https://maven.apache.org/configure.html says # comments in .mvn/maven.config are supported "starting with Maven 3.9.0." That's wrong — comment support was added by MNG-7698 (https://issues.apache.org/jira/browse/MNG-7698), fixed in 3.9.3, not 3.9.0. The one-arg-per-line rule (a separate change) is what actually landed in 3.9.0, via MNG-7684 (https://issues.apache.org/jira/browse/MNG-7684).

Result: users on 3.9.0–3.9.2 who add # comments (trusting the docs) get an error: "Unrecognized maven.config file entries: [# comment text]"

Please split the NOTICE into two correct version claims (3.9.0 for one-arg-per-line, 3.9.3 for comments).

Open configure.html and review the NOTICE about .mvn/maven.config, then check the linked MNG-7684 and MNG-7698 references. Update the text so one-argument-per-line support is attributed to Maven 3.9.0 and comment support to 3.9.3, with both claims clearly separated.

Written by the indexing model from the issue text.