Few minor corrections for the BTC204 course. I added all the links to the tutorials. I also corrected a title and a paragraph where a number was different from the one in the image. All changes have been made in all languages. The PR can be merged directly.
Few minor corrections for the BTC204 course. I added all the links to the tutorials. I also corrected a title and a paragraph where a number was different from the one in the image. All changes have been made in all languages. The PR can be merged directly.