dns yaml: fix detect ports of tcp relying on udp

The probing parser detection ports yaml settings of the TCP part
of the DNS parser accidentally used udp as protocol string, causing
the wrong part of the YAML to be evaluated.

src/app-layer-dns-tcp.c

@@ -605,7 +605,7 @@ void RegisterDNSTCPParsers(void) {
                                           STREAM_TOSERVER,
                                           DNSTcpProbingParser);
         } else {
-            AppLayerProtoDetectPPParseConfPorts("udp", IPPROTO_TCP,
+            AppLayerProtoDetectPPParseConfPorts("tcp", IPPROTO_TCP,
                                                 proto_name, ALPROTO_DNS,
                                                 0, sizeof(DNSTcpHeader),
                                                 DNSTcpProbingParser);