docs: improve token refresh docu #1604

Job	Run time
deployment-test / test-prepare	3s
upgradeability-test / test-prepare	4s
verify / verify-formatting	1m 25s
deployment-test / secret-presence	1s
verify / verify-helm-docs	14s
verify / verify-license-headers	5s
verify / verify-dependencies / Dash-Verify-Licenses	1m 27s
verify / verify-dependencies / Review-Allowed-Licenses	7s
deployment-test / test-in-memory	3m 2s
deployment-test / test-hashicorp-postgres	5m 12s
deployment-test / test-azure-vault-postgres	0s
upgradeability-test / test-upgradeability	5m 4s
verify / api-tests	2m 10s
verify / end-to-end-tests	12m 21s
verify / integration-tests	2m 13s
verify / dataplane-tests	1m 40s
verify / miw-integration-tests	2m 39s
verify / postgres-tests	9m 49s
verify / unit-tests	2m 59s
summary	1s
	50m 36s

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