RFR: clarify how to set the affects versions [v9]

[Alexey Ivanov]

On Thu, 21 Mar 2024 17:30:40 GMT, Roger Calnan <duke at openjdk.org> wrote:

>> moved together information on how the set the affects version and the meaning of the (Rel)-na and (Rel)-wnf labelss
>
> Roger Calnan has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains ten commits:
> 
>  - merged in latest changes
>  - updates from feedback
>  - updates from feedback
>  - updates from feedback
>  - updates from feedback
>  - updates from feedback
>  - updates from feedback
>  - updates from feedback
>  - clarify how to set the affects versions

src/guide/jbs-jdk-bug-system.md line 49:

> 47: * Make a reasonable attempt to narrow down which build or release the failure first appeared in.
> 48: * Set [Affects Version/s]{.jbs-field} to the earliest JDK version(s) where the failure was seen.
> 49:   * If the failure is found in an update train of the JDK (e.g. 11.0.x), if possible please see if it's also present in [mainline](https://github.com/openjdk/jdk). See [Indicating what releases an issue is applicable to](#indicating-what-releases-an-issue-is-applicable-to) for more details.

Preserve modification from the previous commit by @JesperIRL?
Suggestion:

  * If the failure is found in an update train of the JDK (e.g. 11.0.x), please see (if possible) if it's also present in [mainline](https://github.com/openjdk/jdk). See [Indicating what releases an issue is applicable to](#indicating-what-releases-an-issue-is-applicable-to) for more details.

Or remove _“if possible”_ altogether?

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PR Review Comment: https://git.openjdk.org/guide/pull/119#discussion_r1534389158