Fix #344, add doc-prebuild dependency

[jphickey]

Checklist (Please check before submitting)

• I reviewed the Contributing Guide.
• I signed and emailed the appropriate Contributor License Agreement to GSFC-SoftwareRelease@mail.nasa.gov and copied cfs-program@lists.nasa.gov.

Describe the contribution
The documentation requires some artifacts to be in place, this added dependency ensures they are created before doxygen runs.

Fixes #344

Testing performed
Run documentation build

Expected behavior changes
No missing file if this is the first/only target built (file will be created due to dependency)

System(s) tested on
Ubuntu 22.04

Additional context
Requires merging nasa/cFE#2214 and nasa/osal#1341 before this will actually work.

Contributor Info - All information REQUIRED for consideration of pull request
Joseph Hickey, Vantage Systems, Inc.