img srcset is not a correct relative path

[smarie]

At the bottom of this example : https://smarie.github.io/python-m5p/generated/gallery/1_simple_1D_demo/

The image is not displayed correctly :

(from smarie/python-m5p#8)

It seems that this is dues to the srcset attribute of the img, that is not relative.

<img alt="Decision Tree Regression" class="mkd-glr-single-img" src="../images/mkd_glr_1_simple_1D_demo_001.png" srcset="/generated/gallery/images/mkd_glr_1_simple_1D_demo_001.png">

[smarie]

The bug is fixed if we replace the path with a relative one: srcset="../images/mkd_glr_1_simple_1D_demo_001.png".

Let's hope that the fix can work both for local and gh-pages deploy !