Update tokenizer_config.json

for this error
```A decoder-only architecture is being used, but right-padding was detected! For correct generation results, please set `padding_side='left'` when initializing the tokenizer.```

tokenizer_config.json

@@ -380,7 +380,7 @@
   "max_length": 7680,
   "model_max_length": 16384,
   "pad_token": "<|pad|>",
-  "padding_side": "right",
+  "padding_side": "left",
   "sep_token": "<|sep|>",
   "tokenizer_class": "GPT2Tokenizer",
   "truncation_side": "left",