polish warning

ppocr/data/rec/img_tools.py

@@ -108,8 +108,8 @@ def process_image(img,
         if len(text) == 0 or len(text) > max_text_length:
             logger.info(
                 "Warning in ppocr/data/rec/img_tools.py:line106: Wrong data type."
-                "Excepted string with length between 0 and {}, but "
-                "got '{}' ".format(max_text_length, label))
+                "Excepted string with length between 1 and {}, but "
+                "got '{}'. Label is '{}'".format(max_text_length, len(text),label))
             return None
         else:
             if loss_type == "ctc":