Update CONTRIBUTING.md to fix caps in README.md link
Update CONTRIBUTING.md to fix caps in README.md link
GerHobbelt/backbone.layoutmanager,huang-x-h/backbone.layoutmanager,tbranyen/backbone.layoutmanager,tbranyen/backbone.layoutmanager,SimenB/backbone.layoutmanager,huang-x-h/backbone.layoutmanager,SimenB/backbone.layoutmanager