Fix CI

Author: palemieux

.github/workflows/main.yml

@@ -27,10 +27,10 @@ jobs:
     needs: build
     if: github.event_name == 'pull_request'
     steps:
-      - uses: ferdinandkeller/html-to-pdf-action@v2
+      - uses: fifsky/html-to-pdf-action@master
         with:
-          source-path: build/index.html
-          destination-path: build/register.pdf
+          htmlFile: ./build/index.html
+          outputFile: ./build/register.pdf
 
       - name: Upload the PDF as an artifact
         id: pdf-artifact