fix: artifact upload on windows

Author: insightmind

.github/workflows/build.yml

@@ -66,7 +66,7 @@ jobs:
         uses: actions/upload-artifact@v2
         with:
           name: ${{ matrix.os }}
-          path: build/bin/leanInk
+          path: build
 
       - name: Run tests
         run: make -C test run_tests