rpc: Properly document scantxoutset return value

Can be reviewed with --ignore-all-space

src/rpc/blockchain.cpp

@@ -2162,14 +2162,18 @@ static RPCHelpMan scantxoutset()
                 {
                     {"desc", RPCArg::Type::STR, RPCArg::Optional::NO, "An output descriptor"},
                     {"range", RPCArg::Type::RANGE, /* default */ "1000", "The range of HD chain indexes to explore (either end or [begin,end])"},
-                                },
-                            },
+                }},
             },
                         "[scanobjects,...]"},
         },
-                RPCResult{
-                    RPCResult::Type::OBJ, "", "",
         {
+            RPCResult{"When action=='abort'", RPCResult::Type::BOOL, "", ""},
+            RPCResult{"When action=='status' and no scan is in progress", RPCResult::Type::NONE, "", ""},
+            RPCResult{"When action=='status' and scan is in progress", RPCResult::Type::OBJ, "", "",
+            {
+                {RPCResult::Type::NUM, "progress", "The scan progress"},
+            }},
+            RPCResult{"When action=='start'", RPCResult::Type::OBJ, "", "", {
                 {RPCResult::Type::BOOL, "success", "Whether the scan was completed"},
                 {RPCResult::Type::NUM, "txouts", "The number of unspent transaction outputs scanned"},
                 {RPCResult::Type::NUM, "height", "The current block height (index)"},
@@ -2188,6 +2192,7 @@ static RPCHelpMan scantxoutset()
                 }},
                 {RPCResult::Type::STR_AMOUNT, "total_amount", "The total amount of all found unspent outputs in " + CURRENCY_UNIT},
             }},
+        },
         RPCExamples{""},
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {