chore(ci): fixing destroy instance image (#1914)

Signed-off-by: Tibor Dancs <tdancs@redhat.com>

Author: ScrewTSW

.github/workflows/ai-lab-e2e-nightly-windows.yaml

@@ -240,7 +240,7 @@ jobs:
           -e ARM_SUBSCRIPTION_ID=${{ secrets.ARM_SUBSCRIPTION_ID }} \
           -e ARM_CLIENT_ID=${{ secrets.ARM_CLIENT_ID }} \
           -e ARM_CLIENT_SECRET='${{ secrets.ARM_CLIENT_SECRET }}' \
-          quay.io/rhqp/qenvs:${{ env.QENVS_VERSION }} azure \
+          ${{ env.MAPT_IMAGE }}:${{ env.MAPT_VERSION }} azure \
             windows destroy \
             --project-name 'windows-desktop' \
             --backed-url 'file:///workspace'