rpc: doc: use "output script" terminology consistently in "asm"/"hex" results

The wording "public key script" was likely chosen as a human-readable form of
the technical term `scriptPubKey`, but it doesn't seem to be really widespread.
Replace it by the more common term "output script" instead. Note that the
argument for the `decodescript` RPC is not necessarily an output script (it
could e.g. be also a redeem script), so in this case we just stay generic and
use "script".

See also the draft BIP "Terminology for Transaction Components"
(https://github.com/murchandamus/bips/blob/2022-04-tx-terminology/bip-tx-terminology.mediawiki)
which suggests to use "output script" as well.

Affects the help text of the following RPCs:
    - decodepsbt
    - decoderawtransaction
    - decodescript
    - getblock (if verbosity=3)
    - getrawtransaction (if verbosity=2,3)
    - gettxout

src/rpc/blockchain.cpp

@@ -654,9 +654,9 @@ const RPCResult getblock_vin{
                 {RPCResult::Type::STR_AMOUNT, "value", "The value in " + CURRENCY_UNIT},
                 {RPCResult::Type::OBJ, "scriptPubKey", "",
                 {
-                    {RPCResult::Type::STR, "asm", "Disassembly of the public key script"},
+                    {RPCResult::Type::STR, "asm", "Disassembly of the output script"},
                     {RPCResult::Type::STR, "desc", "Inferred descriptor for the output"},
-                    {RPCResult::Type::STR_HEX, "hex", "The raw public key script bytes, hex-encoded"},
+                    {RPCResult::Type::STR_HEX, "hex", "The raw output script bytes, hex-encoded"},
                     {RPCResult::Type::STR, "address", /*optional=*/true, "The Bitcoin address (only if a well-defined address exists)"},
                     {RPCResult::Type::STR, "type", "The type (one of: " + GetAllOutputTypes() + ")"},
                 }},
@@ -1056,9 +1056,9 @@ static RPCHelpMan gettxout()
                 {RPCResult::Type::NUM, "confirmations", "The number of confirmations"},
                 {RPCResult::Type::STR_AMOUNT, "value", "The transaction value in " + CURRENCY_UNIT},
                 {RPCResult::Type::OBJ, "scriptPubKey", "", {
-                    {RPCResult::Type::STR, "asm", "Disassembly of the public key script"},
+                    {RPCResult::Type::STR, "asm", "Disassembly of the output script"},
                     {RPCResult::Type::STR, "desc", "Inferred descriptor for the output"},
-                    {RPCResult::Type::STR_HEX, "hex", "The raw public key script bytes, hex-encoded"},
+                    {RPCResult::Type::STR_HEX, "hex", "The raw output script bytes, hex-encoded"},
                     {RPCResult::Type::STR, "type", "The type, eg pubkeyhash"},
                     {RPCResult::Type::STR, "address", /*optional=*/true, "The Bitcoin address (only if a well-defined address exists)"},
                 }},

src/rpc/rawtransaction.cpp

@@ -85,9 +85,9 @@ static void TxToJSON(const CTransaction& tx, const uint256 hashBlock, UniValue&
 static std::vector<RPCResult> ScriptPubKeyDoc() {
     return
          {
-             {RPCResult::Type::STR, "asm", "Disassembly of the public key script"},
+             {RPCResult::Type::STR, "asm", "Disassembly of the output script"},
              {RPCResult::Type::STR, "desc", "Inferred descriptor for the output"},
-             {RPCResult::Type::STR_HEX, "hex", "The raw public key script bytes, hex-encoded"},
+             {RPCResult::Type::STR_HEX, "hex", "The raw output script bytes, hex-encoded"},
              {RPCResult::Type::STR, "address", /*optional=*/true, "The Bitcoin address (only if a well-defined address exists)"},
              {RPCResult::Type::STR, "type", "The type (one of: " + GetAllOutputTypes() + ")"},
          };
@@ -506,18 +506,18 @@ static RPCHelpMan decodescript()
         RPCResult{
             RPCResult::Type::OBJ, "", "",
             {
-                {RPCResult::Type::STR, "asm", "Script public key"},
+                {RPCResult::Type::STR, "asm", "Disassembly of the script"},
                 {RPCResult::Type::STR, "desc", "Inferred descriptor for the script"},
                 {RPCResult::Type::STR, "type", "The output type (e.g. " + GetAllOutputTypes() + ")"},
                 {RPCResult::Type::STR, "address", /*optional=*/true, "The Bitcoin address (only if a well-defined address exists)"},
                 {RPCResult::Type::STR, "p2sh", /*optional=*/true,
                  "address of P2SH script wrapping this redeem script (not returned for types that should not be wrapped)"},
                 {RPCResult::Type::OBJ, "segwit", /*optional=*/true,
-                 "Result of a witness script public key wrapping this redeem script (not returned for types that should not be wrapped)",
+                 "Result of a witness output script wrapping this redeem script (not returned for types that should not be wrapped)",
                  {
-                     {RPCResult::Type::STR, "asm", "String representation of the script public key"},
+                     {RPCResult::Type::STR, "asm", "Disassembly of the output script"},
-                     {RPCResult::Type::STR_HEX, "hex", "Hex string of the script public key"},
+                     {RPCResult::Type::STR_HEX, "hex", "The raw output script bytes, hex-encoded"},
-                     {RPCResult::Type::STR, "type", "The type of the script public key (e.g. witness_v0_keyhash or witness_v0_scripthash)"},
+                     {RPCResult::Type::STR, "type", "The type of the output script (e.g. witness_v0_keyhash or witness_v0_scripthash)"},
                      {RPCResult::Type::STR, "address", /*optional=*/true, "The Bitcoin address (only if a well-defined address exists)"},
                      {RPCResult::Type::STR, "desc", "Inferred descriptor for the script"},
                      {RPCResult::Type::STR, "p2sh-segwit", "address of the P2SH script wrapping this witness redeem script"},
@@ -833,9 +833,9 @@ const RPCResult decodepsbt_inputs{
                 {RPCResult::Type::NUM, "amount", "The value in " + CURRENCY_UNIT},
                 {RPCResult::Type::OBJ, "scriptPubKey", "",
                 {
-                    {RPCResult::Type::STR, "asm", "Disassembly of the public key script"},
+                    {RPCResult::Type::STR, "asm", "Disassembly of the output script"},
                     {RPCResult::Type::STR, "desc", "Inferred descriptor for the output"},
-                    {RPCResult::Type::STR_HEX, "hex", "The raw public key script bytes, hex-encoded"},
+                    {RPCResult::Type::STR_HEX, "hex", "The raw output script bytes, hex-encoded"},
                     {RPCResult::Type::STR, "type", "The type, eg 'pubkeyhash'"},
                     {RPCResult::Type::STR, "address", /*optional=*/true, "The Bitcoin address (only if a well-defined address exists)"},
                 }},