update example snippet

Author: cctdaniel

governance/xc_admin/packages/xc_admin_cli/README.md

@@ -22,7 +22,7 @@ Note:
 To activate a transaction:
 ```
 
-npx ts-node src/index.ts activate -t <TRANSACTION_HASH> -c <CLUSTER: [mainnet|devnet]> -w <WALLET_SECRET_KEY_FILEPATH: [filepath|"ledger"]> -lda <LEDGER_DERIVATION_ACCOUNT> -ldc <LEDGER_DERIVATION_CHANGE>
+npx ts-node src/index.ts activate -t <TRANSACTION_HASH> -c <CLUSTER: [mainnet|devnet]> -v <VAULT_ADDRESS> -w <WALLET_SECRET_KEY_FILEPATH: [filepath|"ledger"]> -lda <LEDGER_DERIVATION_ACCOUNT> -ldc <LEDGER_DERIVATION_CHANGE>
 
 ```