Update CONTRIBUTING.md
Update CONTRIBUTING.md
frague59/wagtailmenus,rkhleics/wagtailmenus,frague59/wagtailmenus,ababic/wagtailmenus,ababic/wagtailmenus,rkhleics/wagtailmenus,rkhleics/wagtailmenus,frague59/wagtailmenus,ababic/wagtailmenus