Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -1035,3 +1035,5 @@
 {"step": 20700, "tokens": 10852761600, "loss": 2.712258148193359, "tokens_per_second": 985639.3671655391, "lr": 0.0015, "gradient_norm": 0.14630071818828583, "benchmark": false}
 {"step": 20720, "tokens": 10863247360, "loss": 2.7553104400634765, "tokens_per_second": 976125.8297539846, "lr": 0.0015, "gradient_norm": 0.15526510775089264, "benchmark": false}
 {"step": 20740, "tokens": 10873733120, "loss": 2.7063453674316404, "tokens_per_second": 984479.200702056, "lr": 0.0015, "gradient_norm": 0.16980494558811188, "benchmark": false}
+{"step": 20760, "tokens": 10884218880, "loss": 2.731993293762207, "tokens_per_second": 995509.2724137008, "lr": 0.0015, "gradient_norm": 0.17160440981388092, "benchmark": false}
+{"step": 20780, "tokens": 10894704640, "loss": 2.764567565917969, "tokens_per_second": 851389.117484721, "lr": 0.0015, "gradient_norm": 0.15944555401802063, "benchmark": false}