fix workflow in github actions

[daniellga]

workflow_run:
workflows: ["R-CMD-check"] # change this name
types:
- completed

jobs:
run_commands:
runs-on: ubuntu-latest
if: ${{ github.event.workflow_run.conclusion == 'success' }} # add this if

[daniellga]

add --vanila
shell: Rscript --vanilla {0}