[doc] Update unbroadcast description in RPC results

Author: amitiuttarwar

src/rpc/blockchain.cpp

@@ -414,7 +414,7 @@ static std::vector<RPCResult> MempoolEntryDescription() { return {
     RPCResult{RPCResult::Type::ARR, "spentby", "unconfirmed transactions spending outputs from this transaction",
         {RPCResult{RPCResult::Type::STR_HEX, "transactionid", "child transaction id"}}},
     RPCResult{RPCResult::Type::BOOL, "bip125-replaceable", "Whether this transaction could be replaced due to BIP125 (replace-by-fee)"},
-    RPCResult{RPCResult::Type::BOOL, "unbroadcast", "Whether this transaction is currently unbroadcast (initial broadcast not yet confirmed)"},
+    RPCResult{RPCResult::Type::BOOL, "unbroadcast", "Whether this transaction is currently unbroadcast (initial broadcast not yet acknowledged by any peers)"},
 };}
 
 static void entryToJSON(const CTxMemPool& pool, UniValue& info, const CTxMemPoolEntry& e) EXCLUSIVE_LOCKS_REQUIRED(pool.cs)