Adds a link to the mailing list in contributing.rst
Adds a link to the mailing list in contributing.rst

Sonblind/orchestra,unlimitedlabs/orchestra,b12io/orchestra,b12io/orchestra,Sonblind/orchestra,b12io/orchestra,b12io/orchestra,unlimitedlabs/orchestra,unlimitedlabs/orchestra,b12io/orchestra,Sonblind/orchestra