feat: updated ci.yaml control statement

.github/workflows/ci.yaml

@@ -85,7 +85,7 @@ jobs:
             flutter config --enable-linux-desktop
           elif [ "$RUNNER_OS" == "macOS" ]; then
             flutter config --enable-macos-desktop
-          if [ "$RUNNER_OS" == "windows" ]; then
+          elif [ "$RUNNER_OS" == "windows" ]; then
             flutter config --enable-windows-desktop
           fi
         shell: bash