docs: adjust StandByCommittee node config documentation

Add a note about elements order.

Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>

docs/node-configuration.md

@@ -345,7 +345,7 @@ protocol-related settings described in the table below.
 | P2PStateExchangeExtensions | `bool` | `false` | Enables the following P2P MPT state data exchange logic: <br>• `StateSyncInterval` protocol setting <br>• P2P commands `GetMPTDataCMD` and `MPTDataCMD` | Not supported by the C# node, thus may affect heterogeneous networks functionality. Can be supported either on MPT-complete node (`KeepOnlyLatestState`=`false`) or on light GC-enabled node (`RemoveUntraceableBlocks=true`) in which case `KeepOnlyLatestState` setting doesn't change the behavior, an appropriate set of MPTs is always stored (see `RemoveUntraceableBlocks`). |
 | ReservedAttributes | `bool` | `false` | Allows to have reserved attributes range for experimental or private purposes. |
 | SeedList | `[]string` | [] | List of initial nodes addresses used to establish connectivity. |
-| StandbyCommittee | `[]string` | [] | List of public keys of standby committee validators are chosen from. |
+| StandbyCommittee | `[]string` | [] | List of public keys of standby committee validators are chosen from. | The list of keys is not required to be sorted, but it must be exactly the same within the configuration files of all the nodes in the network. |
 | StateRootInHeader | `bool` | `false` | Enables storing state root in block header. | Experimental protocol extension! |
 | StateSyncInterval | `int` | `40000` | The number of blocks between state heights available for MPT state data synchronization. | `P2PStateExchangeExtensions` should be enabled to use this setting. |
 | TimePerBlock | `Duration` | `15s` | Minimal (and targeted for) time interval between blocks. Must be an integer number of milliseconds. |