Add more details on how to request data from google takeout correctly.

[dazzag24]

The default is to download everything. This can result in an enormous amount of data when you only really need 2 types of data for now:

• My Activity
• Location History

In addition unless you specify that "My Activity" is downloaded in JSON format the default is HTML. This then causes the

google-takeout-to-sqlite my-activity takeout.db takeout.zip

command to fail as it only contains html files not json files.

Thanks