[m-rev.] [www] for review: Update contributions page.

[Zoltan Somogyi]

2022-11-28 11:09 GMT+11:00 "Peter Wang" <novalazy at gmail.com>:
> development/include/contributions.inc:
>     Add link to Volker Wysk's list of Mercury resources.
> 
>     Suggest using external code hosting services instead of
>     contributing to "extras".

That looks good.

Zoltan.