log ASCII instead of byte array for FIX_MESSAGE_TCP written bytes

It's now consistent with the read side and easier to read.
For FIXP it's still bytes.

artio-core/src/main/java/uk/co/real_logic/artio/engine/framer/FixSenderEndPoint.java

@@ -343,8 +343,7 @@ private int writeBuffer(
         ByteBufferUtil.position(buffer, writePosition);
 
         final int written = channel.write(buffer, seqNum, replay);
-        ByteBufferUtil.position(buffer, bufferOffset);
-        DebugLogger.logBytes(FIX_MESSAGE_TCP, "Written  ", buffer, writePosition, written);
+        DebugLogger.log(FIX_MESSAGE_TCP, "Written  ", directBuffer, offset + reattemptBytesWritten, written);
 
         buffer.limit(startLimit).position(startPosition);