config: fix bos_token_id and eos_token_id

config.json

@@ -5,9 +5,9 @@
     "GPT2LMHeadModel"
   ],
   "attn_pdrop": 0.1,
-  "bos_token_id": 50256,
+  "bos_token_id": 52000,
   "embd_pdrop": 0.1,
-  "eos_token_id": 50256,
+  "eos_token_id": 52000,
   "gradient_checkpointing": false,
   "initializer_range": 0.02,
   "layer_norm_epsilon": 1e-05,