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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Please read this: https://docs.codewars.com/training/troubleshooting#post-discourse
About your problem, you're using ' (single quotes) and you should be using ` (backticks)
You're mixing function declaration with anonymous function declaration syntax, it's incorrect. You need to pick 1 of them.