RFR: JDK-8306607: Apply 80-column output to javac supported version output

[Joe Darcy]

On Fri, 12 May 2023 20:13:11 GMT, Jonathan Gibbons <jjg at openjdk.org> wrote:

> Please review a trivial `noreg-doc` output to fix a "long lines" issue.
> The solution should be good enough for at least a few years, and by then, we may have pruned the list of supported releases :-)

Marked as reviewed by darcy (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/13965#pullrequestreview-1425113186