Update description of COATxLookupEnabled CLI flag

Co-authored-by: Peter Argue <89119817+peterargue@users.noreply.github.com>

Author: m-Peter

cmd/run/cmd.go

@@ -282,7 +282,7 @@ func init() {
 	Cmd.Flags().StringVar(&cloudKMSLocationID, "coa-cloud-kms-location-id", "", "The location ID where the key ring is grouped into, e.g. 'global'")
 	Cmd.Flags().StringVar(&cloudKMSKeyRingID, "coa-cloud-kms-key-ring-id", "", "The key ring ID where the KMS keys exist, e.g. 'tx-signing'")
 	Cmd.Flags().StringVar(&cloudKMSKey, "coa-cloud-kms-key", "", `Name of the KMS key and its version, e.g. "gw-key-6@1"`)
-	Cmd.Flags().BoolVar(&cfg.COATxLookupEnabled, "coa-tx-lookup-enabled", false, "Release COA signing keys by looking up their tx result status. Increases capacity of the available COA signing keys.")
+	Cmd.Flags().BoolVar(&cfg.COATxLookupEnabled, "coa-tx-lookup-enabled", false, "Tracks cadence transactions to release COA signing keys more quickly. Use this on nodes with high tx volume that frequently run out of proposer keys.")
 	Cmd.Flags().StringVar(&walletKey, "wallet-api-key", "", "ECDSA private key used for wallet APIs. WARNING: This should only be used locally or for testing, never in production.")
 	Cmd.Flags().IntVar(&cfg.MetricsPort, "metrics-port", 9091, "Port for the metrics server")
 	Cmd.Flags().BoolVar(&cfg.IndexOnly, "index-only", false, "Run the gateway in index-only mode which only allows querying the state and indexing, but disallows sending transactions.")