Restore tox test environment to be called 'docs' as on Travis
Restore tox test environment to be called 'docs' as on Travis

DXCanas/kolibri,lyw07/kolibri,lyw07/kolibri,jonboiser/kolibri,jonboiser/kolibri,christianmemije/kolibri,DXCanas/kolibri,lyw07/kolibri,christianmemije/kolibri,benjaoming/kolibri,learningequality/kolibri,indirectlylit/kolibri,indirectlylit/kolibri,learningequality/kolibri,jonboiser/kolibri,mrpau/kolibri,benjaoming/kolibri,christianmemije/kolibri,benjaoming/kolibri,mrpau/kolibri,christianmemije/kolibri,indirectlylit/kolibri,learningequality/kolibri,DXCanas/kolibri,jonboiser/kolibri,mrpau/kolibri,learningequality/kolibri,lyw07/kolibri,DXCanas/kolibri,benjaoming/kolibri,mrpau/kolibri,indirectlylit/kolibri