rpc: Properly document getblocktemplate return value

Can be reviewed with --ignore-all-space

src/rpc/mining.cpp

@@ -519,19 +519,19 @@ static RPCHelpMan getblocktemplate()
                 {"capabilities", RPCArg::Type::ARR, /* treat as named arg */ RPCArg::Optional::OMITTED_NAMED_ARG, "A list of strings",
                 {
                     {"str", RPCArg::Type::STR, RPCArg::Optional::OMITTED, "client side supported feature, 'longpoll', 'coinbasevalue', 'proposal', 'serverlist', 'workid'"},
-                                },
-                                },
+                }},
                 {"rules", RPCArg::Type::ARR, RPCArg::Optional::NO, "A list of strings",
                 {
                     {"segwit", RPCArg::Type::STR, RPCArg::Optional::NO, "(literal) indicates client side segwit support"},
                     {"str", RPCArg::Type::STR, RPCArg::Optional::OMITTED, "other client side supported softfork deployment"},
-                                },
-                                },
+                }},
             },
                         "\"template_request\""},
         },
-                RPCResult{
-                    RPCResult::Type::OBJ, "", "",
+        {
+            RPCResult{"If the proposal was accepted with mode=='proposal'", RPCResult::Type::NONE, "", ""},
+            RPCResult{"If the proposal was not accepted with mode=='proposal'", RPCResult::Type::STR, "", "According to BIP22"},
+            RPCResult{"Otherwise", RPCResult::Type::OBJ, "", "",
             {
                 {RPCResult::Type::NUM, "version", "The preferred block version"},
                 {RPCResult::Type::ARR, "rules", "specific block rules that are to be enforced",
@@ -579,8 +579,9 @@ static RPCHelpMan getblocktemplate()
                 {RPCResult::Type::NUM_TIME, "curtime", "current timestamp in " + UNIX_EPOCH_TIME},
                 {RPCResult::Type::STR, "bits", "compressed target of next block"},
                 {RPCResult::Type::NUM, "height", "The height of the next block"},
-                        {RPCResult::Type::STR, "default_witness_commitment", /* optional */ true, "a valid witness commitment for the unmodified block template"}
+                {RPCResult::Type::STR, "default_witness_commitment", /* optional */ true, "a valid witness commitment for the unmodified block template"},
             }},
+        },
         RPCExamples{
                     HelpExampleCli("getblocktemplate", "'{\"rules\": [\"segwit\"]}'")
             + HelpExampleRpc("getblocktemplate", "{\"rules\": [\"segwit\"]}")