source: fix doc comment
@@ -777,7 +777,7 @@ func (o *cursorOffsetNext) processRespPartition(version int16, rp *kmsg.FetchRes
// batches, and this is solely dictated by the magic byte (not the
// fetch response version). The magic byte is located at byte 17.
//
- // 0 thru 8: int64 offset / first offset
+ // 1 thru 8: int64 offset / first offset
// 9 thru 12: int32 length
// 13 thru 16: crc (magic 0 or 1), or partition leader epoch (magic 2)
// 17: magic
