Add explicit .jsonl documentation

Author: philippemnoel

README.md

@@ -43,7 +43,7 @@ Today, a vast amount of non-operational data — events, metrics, historical sna
 - [x] Google Cloud Storage
 - [x] Azure Blob Storage
 - [x] Azure Data Lake Storage Gen2
-- [x] HuggingFace
+- [x] Hugging Face (`.parquet`, `.csv`, `.jsonl`)
 - [x] HTTP server
 - [x] Local file system
 

docs/object_stores/huggingface.mdx

@@ -4,7 +4,7 @@ title: Hugging Face
 
 ## Overview
 
-This code block demonstrates how to query machine learning datasets from the Hugging Face Datasets library. The file path must start with `hf://`.
+This code block demonstrates how to query machine learning datasets from the Hugging Face Datasets library. The file path must start with `hf://`. The supported file types are `.parquet`, `.csv` and `.jsonl`.
 
 ```sql
 -- CSV format is assumed