`forth`: `evaluateBoth` property

[NobbZ]

In the forth specification there is a single test for the evaluateBoth property.

The remaining tests are for the evaluate property.

https://github.com/exercism/problem-specifications/blob/main/exercises/forth/canonical-data.json#L510

This confused the erlang test generator recently, as it assumes the property key points to the function under test.

Is this a missunderstanding on my side or do we need to find another way to specify a sequence of operations/function calls in the spec?