Fix typos

Author: Haarolean

api/src/main/java/io/kafbat/ui/serdes/SerdesInitializer.java

@@ -173,9 +173,9 @@ private Map<String, SerdeInstance> mirrorMakerSerdes() {
         HeartbeatSerde.NAME,
         mirrorSerde(HeartbeatSerde.NAME, HeartbeatSerde.TOPIC_NAME_PATTERN, new HeartbeatSerde()),
         OffsetSyncSerde.NAME,
-        mirrorSerde(HeartbeatSerde.NAME, OffsetSyncSerde.TOPIC_NAME_PATTERN, new OffsetSyncSerde()),
+        mirrorSerde(OffsetSyncSerde.NAME, OffsetSyncSerde.TOPIC_NAME_PATTERN, new OffsetSyncSerde()),
         CheckpointSerde.NAME,
-        mirrorSerde(HeartbeatSerde.NAME, CheckpointSerde.TOPIC_NAME_PATTERN, new CheckpointSerde())
+        mirrorSerde(CheckpointSerde.NAME, CheckpointSerde.TOPIC_NAME_PATTERN, new CheckpointSerde())
     );
   }