Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -1005,3 +1005,5 @@
 {"step": 20100, "tokens": 10538188800, "loss": 2.7180532455444335, "tokens_per_second": 982018.1308888848, "lr": 0.0015, "gradient_norm": 0.14448480308055878, "benchmark": false}
 {"step": 20120, "tokens": 10548674560, "loss": 2.769293212890625, "tokens_per_second": 972250.4932649111, "lr": 0.0015, "gradient_norm": 0.14115169644355774, "benchmark": false}
 {"step": 20140, "tokens": 10559160320, "loss": 2.743351173400879, "tokens_per_second": 975515.970219282, "lr": 0.0015, "gradient_norm": 0.14357905089855194, "benchmark": false}
+{"step": 20160, "tokens": 10569646080, "loss": 2.7633874893188475, "tokens_per_second": 978432.818261292, "lr": 0.0015, "gradient_norm": 0.15365487337112427, "benchmark": false}
+{"step": 20180, "tokens": 10580131840, "loss": 2.7610193252563477, "tokens_per_second": 976707.4679605602, "lr": 0.0015, "gradient_norm": 0.14246156811714172, "benchmark": false}