RFR: 8312882: Update the CONTRIBUTING.md with pointers to lifecycle of a PR

[David Holmes]

On Thu, 29 Jun 2023 18:59:45 GMT, Jesse Glick <duke at openjdk.org> wrote:

> @jaikiran in https://github.com/openjdk/jdk/pull/12871#issuecomment-1612310113 pointed me to a resource I had not previously found. https://openjdk.org/contribute is fine at a high level but still says things like
> 
>> When your change is ready, send a message to the appropriate development list…
> 
> which clearly predates Skara, and does not apparently link to anything more current. Whereas this https://github.com/openjdk/jdk/blob/master/doc/building.md is thorough and discoverable, finding accurate guidelines for proposing pull requests was tough.

I suspect in the absence of the JBS issue in the PR title the bot/jcheck was looking for one in the commit message. Unfortunately we can't see the failed check now.

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PR Comment: https://git.openjdk.org/jdk/pull/14716#issuecomment-1653026674