Dokumentation fixes

[kim-mskw]

I did minor fixes in learning documentation and inclusion of more detailed example description table + deleted unnecessary learning example

After cleaning Process in next development meeting please add and document all the scenarios you feel responsible for.

• [x] @Manish-Khanra
• [x] @maurerle
• [x] @nick-harder
• [x] @adamsjohanna

[kim-mskw]

Since we decided to omit the examples and rather provide them as tutorials in juypter notebooks, the steps can be omited.