[Impresso page] Broken/non-existing links in Tutorials

[caovy-univers]

Good morning,

I'm preparing the materials for Trading Zone, and found broken links on the Tutorials section of the Impresso page.

First link: https://impresso-project.ch/news/2019/03/05/Explore_TM.html
Second link: https://impresso-project.ch/news/2018/09/07/tradingzone-tm.html