Metadata correction for L18-1546

### JSON data block

```json
{
"anthology_id": "L18-1546",
"authors": [
{
"first": "Felipe",
"last": "Soares",
"id": "felipe-soares"
},
{
"first": "Viviane Pereira",
"last": "Moreira",
"id": "viviane-moreira"
},
{
"first": "Karin",
"last": "Becker",
"id": "karin-becker/unverified"
}
],
"authors_old": "Felipe Soares | Viviane Moreira | Karin Becker",
"authors_new": "Felipe Soares | Viviane Pereira Moreira | Karin Becker"
}
```

The issue only needs the L18-1546 correction from `authors_old` to `authors_new`. Locate the metadata record for anthology ID L18-1546 in the repository data and update that author string only. Finish by verifying the entry now matches the provided `authors_new` values and nothing else in the record changed.

由索引模型根据 Issue 内容生成。