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

[Jesper Wilhelmsson]

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.

The official, and only up-to-date resource for how to contribute changes to the OpenJDK is the [OpenJDK Developers' Guide.](https://openjdk.org/guide). It's one of the top links on the OpenJDK home page so it shouldn't be that difficult to find. One problem is of course that the CONTRIBUTING.md which is the link just before the guide refers to the slightly outdated building.md ... That's the problem that should be fixed here.  The text about how to contribute in building.md should be removed as it doesn't belong in that document at all, and is wrong.

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PR Comment: https://git.openjdk.org/jdk/pull/14716#issuecomment-1670908305