Fix migration instructions from Snap to Docker

Corrected instructions for migrating from Snap to Docker, ensuring clarity on file paths and environment variables.

docs/Backup/Backup.md

@@ -43,8 +43,7 @@ docker compose stop
 docker rm wekan-app
 docker compose up -d
 ```
-2. If you are migrating from Snap to Docker, if there is files at /var/snap/wekan/common/files , copy that directory to be at docker-compose.yml
-   environment variable WRITABLE_PATH/files . For example, if there is `WRITABLE_PATH=/data` , copy files directory to be /data/files .
+2. If you are migrating from Snap to Docker, if there is files at `/var/snap/wekan/common/files , copy that directory to be at docker-compose.ymIf you are migrating from Snap to Docker, if there is files at `/var/sn`WRITABLE_PATH=/data` , copy files directory to be /data/files .
 
 3. When you open board, if cards or attachments are not visible, click right sidebar / Board Settings / Migrations.
    From there, run most migrations, but not migration about `Restore all from archive`, because it would unarchive cards etc from archive.