wallet: use PACKAGE_NAME instead of "Bitcoin" in rpcdump

Author: fanquake

src/wallet/rpcdump.cpp

@@ -784,7 +784,7 @@ RPCHelpMan dumpwallet()
     std::sort(vKeyBirth.begin(), vKeyBirth.end());
 
     // produce output
-    file << strprintf("# Wallet dump created by Bitcoin %s\n", FormatFullVersion());
+    file << strprintf("# Wallet dump created by %s %s\n", PACKAGE_NAME, FormatFullVersion());
     file << strprintf("# * Created on %s\n", FormatISO8601DateTime(GetTime()));
     file << strprintf("# * Best block at time of backup was %i (%s),\n", wallet.GetLastBlockHeight(), wallet.GetLastBlockHash().ToString());
     file << strprintf("#   mined on %s\n", FormatISO8601DateTime(block_time));