Update M2M FAQ with more specific requests (#1718)
Update M2M FAQ with more specific requests (#1718)

* Update M2M FAQ with more specific requests

Add more context how it's not just more metadata sources/countries we need, but also how to technically support M2M.

* Add example of M2M challenges

* Update FAQ.md

* remove mystery whitespace

keghani/libphonenumber,google/libphonenumber,google/libphonenumber,google/libphonenumber,google/libphonenumber,keghani/libphonenumber,keghani/libphonenumber,keghani/libphonenumber,google/libphonenumber,google/libphonenumber,keghani/libphonenumber