docs(cobra): update auto-generated documentation

doc/cloud-platform_pipeline_delete-cluster.md

@@ -13,6 +13,8 @@ It will delete the components, then the cluster, the VPC, terraform workspace an
 You must have the following environment variables set, or passed via arguments:
 	- a cluster name
 
+Optionally you can pass a branch name to use for the pipeline run, default is "main"
+
    ** You _must_ have the fly cli installed **
    --> https://concourse-ci.org/fly.html
 
@@ -27,6 +29,7 @@ cloud-platform pipeline delete-cluster [flags]
 ### Options
 
 ```
+  -b, --branch-name string    branch name to use for pipeline run (default: main) (default "main")
       --cluster-name string   cluster to delete
   -h, --help                  help for delete-cluster
 ```