Changes to "Contribution Checklist" -- Format of the contribution.

[Florian Weimer]

* Joseph Myers:

> On Thu, 14 Feb 2019, Florian Weimer wrote:
>
>> Should we move the contribution checklist to Git, so that it we can
>> maintain it more easily?
>
> I think documentation belongs in git *when it is tied to a particular 
> version of the source tree* (and so people working with an older source 
> tree version should be using the corresponding version of the 
> documentation).  So documentation of the source tree structure belongs in 
> git (much of maint.texi is unfortunately rather out of date), but 
> descriptions of process for contributing do not.

I dont't think we have a good review process for official wiki changes.
Not much wiki content benefits from such a review, I suppose, but there
are some exceptions.

Thanks,
Florian