Use PACKAGE_NAME in messages rather than hardcoding "Bitcoin Core"

src/init.cpp

@@ -1663,7 +1663,7 @@ bool AppInitMain(NodeContext& node, interfaces::BlockAndHeaderTipInfo* tip_info)
 
     const auto BadPortWarning = [](const char* prefix, uint16_t port) {
         return strprintf(_("%s request to listen on port %u. This port is considered \"bad\" and "
-                           "thus it is unlikely that any Bitcoin Core peers connect to it. See "
+                           "thus it is unlikely that any peer will connect to it. See "
                            "doc/p2p-bad-ports.md for details and a full list."),
                          prefix,
                          port);