Update jekyll.yml

Author: mikeatm

.github/workflows/jekyll.yml

@@ -55,6 +55,8 @@ jobs:
       - name: Upload artifact
         # Automatically uploads an artifact from the './_site' directory by default
         uses: actions/upload-pages-artifact@v3
+        with: 
+          path: "./mmg_website/_site"
 
   # Deployment job
   deploy: