allow triggering update through webhook

Author: johan12345

.github/workflows/jekyll.yml

@@ -13,6 +13,10 @@ on:
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch:
 
+  # Allows you to trigger this workflow from a webhook
+  repository_dispatch:
+    types: [ trigger-workflow ]
+
 # Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
 permissions:
   contents: read