fix: logout confirmation messages

[mshanemc]

What does this PR do?

fix logout confirmation messages

What issues does this PR fix or reference?

forcedotcom/cli#2671
@W-14903300@

[cristiand391]

QA notes:

✅ single user:

before:

sf org logout --target-org <user>
? Are you sure you want to log out of all your orgs? no
No orgs selected for logout.

after:

sf org logout --target-org <user>
? Are you sure you want to log out of <user>? (y/N)
No orgs selected for logout.

same when running sf org logout and selecting a username from the prompt.