Building in exercise 14 was renamed, answer code should be changed

[irnc]

Building from exercise 14 was renamed from Wirtschaftswissenschaften to Wirtschaftswissenschaften (WIWI). Because name is coded in the answer, it makes exercise invalid. This issue also affects exercise 15 for the same reason.

https://github.com/osmlab/learnoverpass/blob/eafff0c5e307e76c6fd098d21e68a4cc008285f6/content/en/exercises/intro/14.md#L24

Answer should be changed to account for a name change, also exercise content should prepare learner that map is a dynamic object.

NB typing Wirtschaftswissenschaften (WIWI) is not an easy task for non-German speakers, maybe we should allow copy-paste from exercise content?