Histogram of prediction score does not correspond to the sliders

[dcfidalgo]

Describe the bug
In the web app for a text classification dataset, the histogram of the prediction score filter does not correspond to the sliders.
This is a bit confusing when trying to adjust the sliders.

To Reproduce
Do the first tutorial, try to use the slider to find predictions with low scores.

Expected behavior
The histogram should be aligned with the sliders.

Screenshots

In the screenshot, the x-axis of the histogram starts at 50%, but the sliders start at 0%

Environment (please complete the following information):

• OS [e.g. iOS]: Ubuntu
• Browser [e.g. chrome, safari]: Firefox
• Rubrix Version [e.g. 0.10.0]: master
• ElasticSearch Version [e.g. 7.10.2]: 7.10.2
• Docker Image (optional) [e.g. rubrix:v0.10.0]:

[dcfidalgo]

@frascuchon @leiyre