caddy-frontend: Fix bundle generation in the README

10 jobs for erp5-component
Status Job ID Name Coverage
  External
passed SlapOS.SlapRunner.ResilienceTest-Master

00:31:55

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

00:07:59

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python2

06:22:12

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3

01:41:24

passed SlapOS.SlapRunner.ResilienceTest-Master

00:30:42

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

00:07:39

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

00:07:34

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python2

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python2

08:55:32

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3

01:32:18