Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -1037,3 +1037,5 @@
 {"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}
+{"step": 20800, "tokens": 10905190400, "loss": 2.7618080139160157, "tokens_per_second": 983265.0437103453, "lr": 0.0015, "gradient_norm": 0.15064853429794312, "benchmark": false}
+{"step": 20820, "tokens": 10915676160, "loss": 2.7552326202392576, "tokens_per_second": 948031.7664346788, "lr": 0.0015, "gradient_norm": 0.16517570614814758, "benchmark": false}