Link to the endpoint doc page in case of error?
eg. https://datasets-server.huggingface.co/parquet

could return

```json
{"error":"Parameter 'dataset' is required. Read the docs at https://huggingface.co/docs/datasets-server/parquet"}
```

or 

```json
{"error":"Parameter 'dataset' is required.", "docs": "https://huggingface.co/docs/datasets-server/parquet"}
```

instead of

```json
{"error":"Parameter 'dataset' is required"}
```
Link to the endpoint doc page in case of error?: eg. https://datasets-server.huggingface.co/parquet

could return

```json
{"error":"Parameter 'dataset' is required. Read the docs at https://huggingface.co/docs/datasets-server/parquet"}
```

or 

```json
{"error":"Parameter 'dataset' is required.", "docs": "https://huggingface.co/docs/datasets-server/parquet"}
```

instead of

```json
{"error":"Parameter 'dataset' is required"}
```