Fix zip command and version check in workflow

.github/workflows/firmware-autodl.yml

@@ -53,6 +53,7 @@ jobs:
 
           if [ ! -z "$TAG_EXISTS" ]; then
             echo "new_version=false" >> $GITHUB_OUTPUT
+            echo "Version $LATEST_VERSION already exists. Skipping."
           else
             echo "new_version=true" >> $GITHUB_OUTPUT
           fi
@@ -72,9 +73,9 @@ jobs:
         run: |
           find . -type f -name "*.nca.*" -delete
           VERSION="${{ steps.download.outputs.firmware_version }}"
-          if [ -f "Firmware $VERSION.zip" ]; then
-            rm "Firmware $VERSION.zip"
-            zip -r "Firmware $VERSION.zip" "Firmware $VERSION" -i "*.nca"
+          if [ -d "Firmware $VERSION" ]; then
+            rm -f "Firmware $VERSION.zip"
+            zip -rj "Firmware $VERSION.zip" "Firmware $VERSION/" -i "*.nca"
           fi
 
       - name: 📝 Prepare Release Body