Fix/deploy action typo (#396)

* 1st try

* Added docs

* fixed typo

Author: fhennig

.github/workflows/deploy.yml

@@ -16,4 +16,4 @@ jobs:
       - name: Call Netlify build hook
         with:
           HOOK_URL: ${{ secrets.NETLIFY_BUILD_TRIGGER_HOOK }}
-        run: curl -X POST -d '{}' $HOOK_URL
+        run: curl -X POST -d '{}' $HOOK_URL