Small fixes for KH landing page

[agpul]

I have a few requests about the (https://knowledge-hub.eosc-portal.eu/) please and I hope they can be resolved before the review next week:

• We have now fixed something that was wrong in OpenPlato and can now point users directly to all EOSC F related content instead of just a subset of them as it currently is. Therefore, the link under “courses” should be changed to this please: https://openplato.eu/blocks/catalog/list.php?searchurl=1&categories=164

• When you click on “training resources”, this currently takes the user to a demo instance of the catalogue with 13 entries. Can this be fixed please to be the same as the public instance? -> MI SIE WYDAJE ZE ON MA COS Z CACHE BO JA MAM DOBRY LINK, DO SPRAWDZENIA

• Please also change any time that “trainings” is used to “training”! (For example, see screenshot.)

• The description of the KH currently says: “Platform that helps you gain or expand your knowledge in the field of European Open Science Cloud. Explore our learning platform and find trainings in the provided catalog.”
  Could you please change this text to: “A learning management system (Moodle) and training catalogue for the European Open Science Cloud, the EOSC Knowledge Hub is your source of EOSC-related learning and training resources.”