more fixes

Signed-off-by: amogkam <[email protected]>

python/ray/data/read_api.py

@@ -935,7 +935,7 @@ def read_json(
  Examples:
  >>> import ray
  >>> # Read a file in remote storage.
- >>> ray.data.read_json("s3:https://anonymous@ray-example-data/logs.json")
+ >>> ds = ray.data.read_json("s3:https://anonymous@ray-example-data/logs.json")
  >>> ds.schema()
  Column Type
  ------ ----
@@ -1100,6 +1100,7 @@ def read_csv(
  >>> from ray.data.datasource import FileExtensionFilter
  >>> ray.data.read_csv("example:https://different-extensions/",
  ... partition_filter=FileExtensionFilter("csv"))
+ Dataset(num_blocks=..., num_rows=1, schema={a: int64, b: int64})
 
  Args:
  paths: A single file or directory, or a list of file or directory paths.