Fix copy command

Author: matthew-brett

.github/workflows/windows-arm.yml

@@ -60,8 +60,8 @@ jobs:
     - name: Pack
       run: |
         cd local
-        cp -r "scipy_openblas${$env:BUILD_BITS}" $env:BUILD_BITS
-        7z a ../builds/openblas32.zip -tzip $env:BUILD_BITS
+        cp -r "scipy_openblas${env:BUILD_BITS}" $env:BUILD_BITS
+        7z a ../builds/openblas32.zip -tzip openblas32
 
     - name: Test 32-bit interface wheel
       run: |