fix command

test/integration/connect/envoy/run-tests.windows.sh

@@ -442,7 +442,7 @@ function wipe_volumes {
 # Windows containers does not allow cp command while running.
 function stop_and_copy_files {
     # Create CMD file to execute within the container
-    echo "icacls "C:\\workdir" /grant:r Everyone:(OI)(CI)F /T" > copy.cmd
+    echo "icacls C:\workdir /grant:r Everyone:(OI)(CI)F /T" > copy.cmd
     echo "XCOPY C:\workdir_bak C:\workdir /e /h /c /i /y" > copy.cmd
     # Stop dummy container to copy local workdir to container's workdir_bak
     docker.exe stop envoy_workdir_1 > /dev/null