Clarify example in deleting backup command

This makes it clear that deleting a backup is on a cluster, not any other artifact. Issue: [ch10372]

Author: Jonathan S. Katz

cmd/pgo/cmd/delete.go

@@ -303,7 +303,7 @@ var deleteBackupCmd = &cobra.Command{
 Short: "Delete a backup",
 Long: `Delete a backup from pgBackRest. Requires a target backup. For example:
 
- pgo delete backup hippo --target=20201220-171801F`,
+ pgo delete backup clustername --target=20201220-171801F`,
 Run: func(cmd *cobra.Command, args []string) {
 if len(args) == 0 {
 fmt.Println("Error: A cluster name is required for this command.")

docs/content/pgo-client/reference/pgo_delete_backup.md

@@ -9,7 +9,7 @@ Delete a backup
 
 Delete a backup from pgBackRest. Requires a target backup. For example:
 
- pgo delete backup hippo --target=20201220-171801F
+ pgo delete backup clustername --target=20201220-171801F
 
 ```
 pgo delete backup [flags]