[Documentation] Fix require syntax for importing javascript
[Documentation] Fix require syntax for importing javascript

`mdc-foo` is not consistent with other path examples. It let me to believe to require 'switch', for example, I'd use `require('mdc-switch')`. However, what you need is `require('@material/switch'`
material-components/material-components-web,material-components/material-components-web,material-components/material-components-web