Update web-app.yml

Author: rhuss

structural/Sidecar/web-app.yml

@@ -28,7 +28,7 @@ items:
         name: git
       env:
         - name: GIT_REPO
-          value: https://github.com/mdn/beginner-html-site-scripted
+          value: https://github.com/rhuss/beginner-html-site-scripted
       command:
       - "sh"
       - "-c"