Potential policy violations in skill code

[songacademic]

We are having a research project about the policy compliance of Alexa skills and found there are existing policy violations in several skills within this repo. For example, in skills from "Step 1" to "Step 3", all of them ask for user data in output, but they don't provide a privacy policy, which violates Alexa's requirement. We kindly request that you address this issue, as many developers rely on your code and may inadvertently violate policy requirements if these issues persist."