message: doc: update addnode rpc help
diff: @@ -279,7 +279,9 @@ static RPCHelpMan addnode()
  "\nAttempts to add or remove a node from the addnode list.\n"
  "Or try a connection to a node once.\n"
  "Nodes added using addnode (or -connect) are protected from DoS disconnection and are not required to be\n"
  - "full nodes/support SegWit as other outbound peers are (though such peers will not be synced from).\n",
  + "full nodes/support SegWit as other outbound peers are (though such peers will not be synced from).\n" +
  + strprintf("Addnode connections are limited to %u at a time", MAX_ADDNODE_CONNECTIONS) +
  + " and are counted separately from the -maxconnections limit.\n",
  {
  {"node", RPCArg::Type::STR, RPCArg::Optional::NO, "The node (see getpeerinfo for nodes)"},
  {"command", RPCArg::Type::STR, RPCArg::Optional::NO, "'add' to add a node to the list, 'remove' to remove a node from the list, 'onetry' to try a connection to the node once"},
  