Fix/Update broken build badges in documentation (plugin docs) to reflect new platforms/versions from actual repo readme

See the top of e.g. https://cordova.apache.org/docs/en/latest/reference/cordova-plugin-camera/index.html

We now test on iOS 9.3 and 10, and Android 4.4, 5.1, 6.0 and 7.0, as well as desktop browsers - let's make that visible on the docs.