docs(layout-grid): replace mdl with mdc in README (#784)
docs(layout-grid): replace mdl with mdc in README (#784)


anton-kachurin/material-components-web,pgbross/material-components-web,material-components/material-components-web,anton-kachurin/material-components-web,material-components/material-components-web,pgbross/material-components-web,material-components/material-components-web