Add docs-folder to git action yaml

[chan-hoo]

Description

• Add the docs-folder call to the git action yaml file.
• point to dev branch of sphinx-action.

Anticipated changes to regression tests:

• Is baseline change expected ?

Subcomponents involved:

• DA_update (ufs-community/land-DA)
• ufsLand.fd (NOAA-EPIC/ufs-land-driver-emc-dev)
• ufs_model.fd (ufs-community/ufs-weather-model)
• vector2tile_converter.fd (NOAA-PSL/land-vector2tile)
• none

Linked PR's and Issues:

Fixes Issue #80

Testing (for CM's):

• RDHPCS
  • Hera
  • Orion
  • Jet
  • Gaea
  • Cheyenne
• CI
  • Completed
• PW-Clouds
  • AWS
  • AZURE
  • GCP