Missing documentation page : improve-performance
### Describe the bug

Trying to access https://huggingface.co/docs/datasets/v2.8.0/en/package_reference/cache#improve-performance, the page is missing.

The link is in here : https://huggingface.co/docs/datasets/v2.8.0/en/package_reference/loading_methods#datasets.load_dataset.keep_in_memory

### Steps to reproduce the bug

Access the page and see it's missing.

### Expected behavior

Not missing page

### Environment info

Doesn't matter
Hi! Our documentation builder does not support links to sections, hence the bug. This is the link it should point to https://huggingface.co/docs/datasets/v2.8.0/en/cache#improve-performance.