csv examples look weird

[polinaeterna]

csv markdown annotations look weird.
For example, this snippet:

```csv
file_name,text
images/1.jpg,a drawing of a green pokemon with red eyes
images/2.jpg,a green and yellow toy with a red nose
images/3.jpg,a red and white ball with an angry look on its face
images/4.jpg,a cartoon ball with a smile on it's face
```

is displayed like this:

Is it supposed to look like this? Is it possible to do something with it? 🙃

[polinaeterna]

cc @severo
was noticed here huggingface/hub-docs#1148