Export feature: add a link to the api reporting documentation to know all possibilities

[Chardonneaur]

Hi team,

Within the export window:

We cannot see all the parameters combinations which are possible.
Would it simply be possible to add a link to the following documentation: https://developer.matomo.org/api-reference/reporting-api
That would help a lot web analysts to understand how far they can go with the customization of the api url.