Normalize wer computation

Closes #23 (closed)

dan/ocr/document/train.py

@@ -208,12 +208,14 @@ def run():
                 "loss_ce",
                 "cer",
                 "wer",
+                "wer_no_punct",
                 "syn_max_lines",
                 "syn_prob_lines",
             ],  # Metrics name for training
             "eval_metrics": [
                 "cer",
                 "wer",
+                "wer_no_punct",
             ],  # Metrics name for evaluation on validation set during training
             "force_cpu": False,  # True for debug purposes
             "max_char_prediction": 1000,  # max number of token prediction