rpcwallet: mention labels are deactivated for ranged descriptors

src/wallet/rpc/backup.cpp

@@ -1595,7 +1595,7 @@ RPCHelpMan importdescriptors()
                                         /* oneline_description */ "", {"timestamp | \"now\"", "integer / string"}
                                     },
                                     {"internal", RPCArg::Type::BOOL, RPCArg::Default{false}, "Whether matching outputs should be treated as not incoming payments (e.g. change)"},
-                                    {"label", RPCArg::Type::STR, RPCArg::Default{""}, "Label to assign to the address, only allowed with internal=false"},
+                                    {"label", RPCArg::Type::STR, RPCArg::Default{""}, "Label to assign to the address, only allowed with internal=false. Disabled for ranged descriptors"},
                                 },
                             },
                         },