Update multi_tenant_deploy.yml

Author: vibhutikumar07

.github/workflows/multi_tenant_deploy.yml

@@ -61,4 +61,4 @@ jobs:
           pwd
           ls -lrth
           echo "Running cf deploy"
-          cf deploy mta_archives/bookshop-mt_1.0.0.mta -f
+          cf deploy mta_archives/bookshop-mt_1.0.0.mtar -f