Guide for svelte should give an example `clientPath` configuration

### Is your feature request related to a problem? Please describe.

The guide https://the-guild.dev/graphql/codegen/docs/guides/svelte#svelte-apollo

Is out of date with the upstream documentation https://github.com/ticruz38/graphql-codegen-svelte-apollo#readme

It is mentioned in the documentation https://the-guild.dev/graphql/codegen/plugins/typescript/typescript-svelte-apollo#clientpath that `clientPath` is required.

### Describe the solution you'd like

The guide for svelte should give an example for how to configure `clientPath`.

### Describe alternatives you've considered

_No response_

### Any additional important details?

_No response_