Proofread the verbs and fix possible mistakes

Hey! I've built this small application to learn some things but eventually found out that it could be useful for a real use case of learning. As I am not native speaker of either German or English there might be some mistakes in files that contain actual data for the app. It would be really nice if someone who is native-speaker could check the spelling and grammar and fix the possible issues. This issue is beginner friendly, so if you want to help and don't know how, or have some troubles feel free to reach out to me and I will do my best to help!

**Guide**
Files for both languages can be found in `./src/containers/data` they are plain `JavaScript objects` so if you spot a mistake and want to fix it, just do it right there. You can run the app locally and to do that follow the instructions in the main `Readme.md`

**Happy coding!**

Start with the files under ./src/containers/data, which contain the German and English JavaScript objects, and review the wording for spelling and grammar. Run the app using the instructions in Readme.md to inspect the text in context. Done means the identified language mistakes are corrected in the data files.

Written by the indexing model from the issue text.