HF series batch change field name for consistency

[kebetsi]

Method: HF series batch

I propose for the internal "data" property to be called "params" to follow the naming used for callBatch

{
  "format":"seriesBatch",
  "data": [
    {
      "eventId":"ck2bopelt0013zipv1z31d1qx",
      "data":{"format":"flatJSON","fields":["deltaTime","value"],"points":[[0,70],[1,71],[2,72]]}},