communities: broken url fix
communities: broken url fix

* Fixes a broken URL in the community edit page.

Signed-off-by: Lars Holm Nielsen <7eaffca9f7cd98839b5821d0d23e09ff764b82cd@cern.ch>

inveniosoftware/invenio-communities,inveniosoftware/invenio-communities,inveniosoftware/invenio-communities,inveniosoftware/invenio-communities