Images on 3.10 don't display (despite src being correct)

[Omar Shanti]

The tags show instead:
For ex: <img src= '../../mlrefined_images/math_optimization_images/minibatch_functions.png' width="80%" height="auto"/>

https://jermwatt.github.io/mlrefined/blog_posts/3_First_order_methods/3_10_Minibatch.html

Not sure whether the text just needs to be explicitly referred to as an image. Seems a quick fix