fix

Author: reakaleek

.github/workflows/preview-build.yml

@@ -92,7 +92,7 @@ jobs:
           GITHUB_REF_NAME: ${{ github.ref_name }}
         run: |
           case "${GITHUB_EVENT_NAME}" in
-            "pull_request")
+            "pull_request_target")
               echo "PATH_PREFIX=/${GITHUB_REPOSITORY}/pull/${PR_NUMBER}" >> $GITHUB_ENV
               ;;
             "push")