Apply suggestion from @Crash--

Co-authored-by: Quentin Valmori <quentin.valmori@gmail.com>

tdrive/backend/node/src/cli/cmds/migration_cmds/migrate-users.ts

@@ -79,7 +79,7 @@ const migrateUsersCommand: yargs.CommandModule<unknown, unknown> = {
             }
           } else {
             console.log(
-              `[DRY-RUN] Would create Cozy instance for user ${user.email_canonical} with the following params`,
+              `[DRY-RUN] Would create Cozy instance for user ${user.email_canonical} and slug ${sanitizeSlug(userId)} with the following params`,
               userObject
             );
           }