refactor: re-use existing strings for rpc help for quorum dkginfo output

Co-authored-by: Kittywhiskers Van Gogh <63189531+kwvg@users.noreply.github.com>

Author: knst

src/rpc/quorums.cpp

@@ -1002,16 +1002,16 @@ static RPCHelpMan quorum_dkginfo()
                 {
                     {RPCResult::Type::OBJ, "", "",
                     {
-                        {RPCResult::Type::NUM, "llmqType", "The type of the quorum"},
+                        GetRpcResult("llmqType"),
                         {RPCResult::Type::STR, "llmqTypeName", "The name of the quorum type"},
-                        {RPCResult::Type::NUM, "quorumIndex", "The quorum index within the DKG interval"},
+                        GetRpcResult("quorumIndex"),
                         {RPCResult::Type::NUM, "quorumHeight", "The height at which the quorum session starts"},
                         {RPCResult::Type::NUM, "blocksUntilStart", "The number of blocks until the quorum session starts"},
-                        {RPCResult::Type::STR_HEX, "proTxHash", "The proTxHash this entry was computed for"},
+                        GetRpcResult("proTxHash"),
                         {RPCResult::Type::BOOL, "known", "Whether participation could be determined"},
                         {RPCResult::Type::STR, "reason", /*optional=*/true, "Why participation could not be determined"},
                         {RPCResult::Type::BOOL, "isMember", /*optional=*/true, "Whether the masternode is a member of the upcoming quorum"},
-                        {RPCResult::Type::NUM, "memberIndex", /*optional=*/true, "The member index, or -1 if not a member"},
+                        GetRpcResult("memberIndex"),
                         {RPCResult::Type::NUM, "memberCount", /*optional=*/true, "The number of members in the upcoming quorum"},
                         {RPCResult::Type::NUM, "workBlockHeight", /*optional=*/true, "The height of the work block used to compute membership"},
                         {RPCResult::Type::STR_HEX, "workBlockHash", /*optional=*/true, "The hash of the work block used to compute membership"},