Fixed help message for export's 'jail-whitelist' command to be clearer (

#7885)

* Fixed help message for export's 'jail-whitelist' command to be clearer

* Update server/export.go

Co-authored-by: Alessio Treglia <quadrispro@ubuntu.com>
Co-authored-by: Alessio Treglia <alessio@tendermint.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

server/export.go

@@ -113,7 +113,7 @@ func ExportCmd(appExporter types.AppExporter, defaultNodeHome string) *cobra.Com
 	cmd.Flags().String(flags.FlagHome, defaultNodeHome, "The application home directory")
 	cmd.Flags().Int64(FlagHeight, -1, "Export state from a particular height (-1 means latest height)")
 	cmd.Flags().Bool(FlagForZeroHeight, false, "Export state to start at height zero (perform preproccessing)")
-	cmd.Flags().StringSlice(FlagJailAllowedAddrs, []string{}, "List of validators to not jail state export")
+	cmd.Flags().StringSlice(FlagJailAllowedAddrs, []string{}, "Comma-separated list of operator addresses of jailed validators to unjail")
 
 	return cmd
 }