RFR: 8292911: Add a note about jtreg failure handlers in the testing doc [v2]

[Jaikiran Pai]

On Fri, 26 Aug 2022 13:12:19 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

>> Jaikiran Pai has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   incorporate review comments
>
> doc/testing.md line 55:
> 
>> 53: collecting this additional data isn't always necessary. To disable running the
>> 54: failure handler, use `--enable-jtreg-failure-handler=no` when running `configure`.
>> 55: If, however, you want to let the failure handler to run and don't want to be prompted
> 
> Most of this file is kept close to 80 chars per line, at least in the text blocks. Up until here, you have kept with this style, but the additions below get increasingly wider, which looks a bit weird. Would you mind tiding it up a bit?

Hello Erik, I've now updated the file to fix the line lengths.

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PR: https://git.openjdk.org/jdk/pull/10021