Fix CI

Author: evilpan

.github/workflows/main.yml

@@ -23,7 +23,7 @@ jobs:
         uses: actions/upload-artifact@v1
         with:
           name: demoapk
-          path: app/build/outputs/apk/debug/app-debug.apk
+          path: demo_apk/app/build/outputs/apk/debug/app-debug.apk
   test:
     name: Test JNI extraction
     needs: build_apk