Add a more exposed link to Data Science Tutorials to documentation

[bkamins]

I think it would greatly improve the user experience of MLJ.jl if https://alan-turing-institute.github.io/DataScienceTutorials.jl/ were better exposed. Now the link is at the bottom of the page, and none of my students even noticed and tried to click it (and I think these tutorials are essential to learn MLJ.jl quickly; I might be opinionated though).

[ablaom]

Thanks for the positive feedback on DataScienceTutorials. @tlienart has done most of the work and all the design there. Students may also find the Workshop from 2020 useful.

I'm a little perplexed by the comment about exposure. At the top of the MLJ landing page (the page I believe you are referring to) is an orange "button" labelled "Learn", to the right of the very first button "Install". If you click there, it takes you to learning options, including DataScienceTutorials and the workshop. Perhaps you are you suggesting we ditch that button in favour of a "Tutorials" button that links to DST, and leave the other alternatives buried? Or do you have some other suggestion?

[bkamins]

Or do you have some other suggestion?

I will think and let you know what I can suggest. However, no matter what we think I wanted to report that unguided students found it hard to learn MLJ.jl (by unguided I mean students that were asked to learn it from the documentation). I know this is not a super useful answer. I will try to come back here with a more constructive comment.