All Curriculum Helpers need documentation

[ilenia-magoni]

From https://github.com/freeCodeCamp/curriculum-helpers/blob/main/lib/__tests__/curriculum-helper.test.ts

• isCalledWithNoArgs
• concatRegex
• functionRegex

From: https://github.com/freeCodeCamp/curriculum-helpers/blob/main/lib/__tests__/javascript-helper.test.ts

• getFunctionParams

There are some docs in the curriculum-helpers repo, but all documentation should go in https://github.com/freeCodeCamp/contribute