https://www.zotero.org/support/dev/zotero_8_for_developers

migrate-fx140 links to https://github.com/zotero/zotero/tree/fx140/scripts/migrate-fx140, but it should be https://github.com/zotero/zotero/tree/main/scripts/migrate-fx140 or some other branches because fx140 branch does not exist.
Also, the guide recommends copying the `migrate-fx140` directory, but it should be under the `scripts` directory because the script refers to the `scripts/migrate-fx140` directory.