minor fix

main.py

@@ -409,7 +409,7 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
                     raise Skip()
 
                 if options.get('slice') and (start := options.get('start')) and (end := options.get('limit')):
-                    if index < start or index > start + end:
+                    if index < start or index >= start + end:
                         logger.info("[%d/%d] Not planned; skipping '%s'", index-1, limit-1, email)
                         raise Next()
                     if (items := options.get('subcategories')) and (item := str(cell(index, column.region).value)) not in items: