message: Update rest-api.md
diff: @@ -39,7 +39,7 @@ https://mySite.com/api/products?price_gte=5&price_lte=10
  | _lt | Lesser than | price_lt=10 |
  | _lte | Lesser than or equal | price_lte=10 |
  | _null | is or is not null | price_null=true |
  -| _in | is in json array | price_in==%5B10%2C20%5D *(url encoded - `[10,20]`)* |
  +| _in | is in json array | price_in=%5B10%2C20%5D *(url encoded - `[10,20]`)* |
  * you can add several filter conditions using the `&` operator.
  