The markdown documentation does not explicitly mention any license information. This is a crucial omission as license details clarify permissions regarding the dataset's use, modification, sharing, and distribution. Based on the <hint> provided ("missing license information in markdown documentation"), here is the issue identified:

```json
{
    "issue": "Missing license information in markdown documentation",
    "evidence": "## About Dataset ... your support through an upvote would be deeply appreciated ❤️",
    "description": "The markdown documentation lacks explicit license information. This omission limits the understanding of the dataset’s usage rights, restrictions, and permissions. Without clear licensing, potential users might be unsure about the legal implications of using, sharing, or modifying the dataset. This information is essential to ensure the dataset is used ethically and legally."
}
```