Describe the issue linked to the documentation

I can see that the image in the documentation of MDS is not present:
https://scikit-learn.org/stable/modules/manifold.html#multi-dimensional-scaling-mds

Suggest a potential alternative/fix

We should change the hyperlink to have something similar to the previous version:
https://scikit-learn.org/0.24/modules/manifold.html#multi-dimensional-scaling-mds