prepdocs.sh has missing `fi`

[SvenAelterman]

Please provide us with the following information:

This issue is for a: (mark with an x)

- [x] bug report -> please search issues before submitting
- [ ] feature request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

azd up

Any log messages given by the failure

./scripts/prepdocs.sh: 50: Syntax error: "else" unexpected (expecting "fi")

Expected/desired behavior

Deployment is successful.

OS and Version?

Windows 11

[elbruno]

Fixed on the latest version