Fix #310, No File Found Documentation Workflow

[ArielSAdamsNASA]

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
Fixes #310
Workflow was failing due to files not persisting between jobs. Used cache action.

Testing performed
Tested on fork: https://github.com/ArielSAdamsNASA/cFS-JSF-Rules/actions/runs/1057135024

Expected behavior changes
PDFs should generate.

Additional context
PDFs will generate when push on main branch.

Contributor Info - All information REQUIRED for consideration of pull request
Ariel Adams, ASRC Federal

[astrogeco]

@ArielSAdams could you squash?

[ArielSAdamsNASA]

@ArielSAdams could you squash?

Having issues trying to fix the conflicting files and squash them.

[astrogeco]

@ArielSAdamsNASA can you see if my fixes look right?
https://github.com/astrogeco/cFS/actions/runs/1057482277/workflow

[ArielSAdamsNASA]

@ArielSAdamsNASA can you see if my fixes look right?
https://github.com/astrogeco/cFS/actions/runs/1057482277/workflow

Looks good!