Change the structure of parquet files
The parquet files will be stored in the `refs/convert/parquet`"branch" with the following structure:

```
[config]/[split]/[shard index: 0000 to 9999].parquet
```

Note that the "partially" converted datasets will use the following (See https://github.com/huggingface/datasets-server/pull/1448):

```
[config]/[split]/partial/[shard index: 0000 to 9999].parquet
```


Change the structure of parquet files: The parquet files will be stored in the `refs/convert/parquet`"branch" with the following structure:

```
[config]/[split]/[shard index: 0000 to 9999].parquet
```

Note that the "partially" converted datasets will use the following (See https://github.com/huggingface/datasets-server/pull/1448):

```
[config]/[split]/partial/[shard index: 0000 to 9999].parquet
```

