Update Svelte example

[matheusml]

Right now, Counter.html is doing this:

import { connect, getActions  }  from '../../../../../src/svelte';

But it should be doing this:

import { connect, getActions  }  from 'redux-zero/svelte';

@Kiho, could you please change this and check if everything is working?
You should probably update the npm version from the example to 4.3.0

[Kiho]

All done, works great.
Thanks.