Docs: Incorrect time units in API specs

[hungdoansy]

Hi,

Date param in this doc (/dateToBlock) should be in seconds, not milliseconds.

I tried 2 samples of date: 2021-01-01 00:00:00 UTC

1. 1609459200

{
  "date": "2021-01-01T00:00:00+00:00",
  "block": 11565019,
  "timestamp": 1609459200
}

2. 1609459200000

{
  "date": "52971-09-25T00:00:00+00:00",
  "block": 13942748,
  "timestamp": 1641349166
}