[Metafacture] metafacture-documentation and examples have moved

[Christoph Böhme]

Hi all,

I moved the metafacture-documentation and metafacture-examples
repositories form the Culturegraph to the Metafacture organisation. The
old repository URLs should continue to work but it is a good idea to
update them if you have saved them somewhere (for instance as a remote
in a git repository).

The new URLs are:

 - metafacture-documentation:
   https://github.com/metafacture/metafacture-documentation

 - metafacture-examples:
   https://github.com/metafacture/metafacture-examples


Access rights to the repositories should as before. Please let me know
if not.

Best,
Christoph