`license: etalab-2.0` is now built-in thanks to a request from Etalab team

but it might lead to less directly linking to the actual license file, so feel free to disregard this PR (we could improve the UX by linking each 'official' license to the canonical webpage about it)

README.md

@@ -1,7 +1,5 @@
 ---
-license: other
-license_name: open-licence-2.0
-license_link: https://www.etalab.gouv.fr/wp-content/uploads/2018/11/open-licence.pdf
+license: etalab-2.0
 pretty_name: French Land Cover from Aerospace Imagery
 size_categories:
 - 10B<n<100B