fix workflow fmt

Author: alexandruradovici

.github/workflows/rust.yml

@@ -18,7 +18,7 @@ jobs:
         run: |
           cd device
           for package in $(ls -d usb*); do
-            (cd #package && cargo fmt --check)
+            (cd $package && cargo fmt --check)
           done
           cd ..
           cd host/usb-bulk-rust