Updating policy query parameter language to be clearer.

[janedotx]

Explain pull request

This is a response to this issue: https://github.com/openmobilityfoundation/mobility-data-specification/issues/668

Is this a breaking change

A breaking change would require consumers or implementors of the API to modify their code for it to continue to function (ex: renaming of a required field or the change in data type of an existing field). A non-breaking change would allow existing code to continue to function (ex: addition of an optional field or the creation of a new optional endpoint).

• No, not breaking

Impacted Spec

Which spec(s) will this pull request impact?

• policy