Added time specifications to token doc

[KSiig]

Community Note

• Please vote on this pull request by adding a 👍 reaction to the original pull request comment to help the community and maintainers prioritize this request
• Please do not leave "+1" comments, they generate extra noise for pull request followers and do not help prioritize the request

Relates OR Closes #0000

Release note for CHANGELOG:

NONE

Output from acceptance testing:

$ make testacc TESTARGS='-run=TestAccXXX'

...

[hashicorp-cla]

All committers have signed the CLA.