fix: Update the "Switch principal" error message (#1961)

# Description

Updated the "Switch principal" error message to better reflect what you
need to do.

## Changelog

- [x] Patch
- [ ] Skip

## cdf

### Improved

- Updated the "Switch principal" error message to better reflect what
you need to do when running `cdf auth init/verify`.

## templates

No changes.

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Co-authored-by: Anders Albert <60234212+doctrino@users.noreply.github.com>
Co-authored-by: anders-albert <anders0albert@gmail.com>
Co-authored-by: Aashutosh-cognite <aashutosh.chaubey@cognite.com>
