Fix the arguments

tokenizer.json

@@ -216,11 +216,49 @@
   "post_processor": {
     "type": "TemplateProcessing",
     "single": [
-        { "SpecialToken": { "id": "<|begin_of_text|>", "type_id": 0 } },
-        { "Sequence": { "id": "A", "type_id": 0 } }
+      {
+        "SpecialToken": {
+          "id": "<|begin_of_text|>",
+          "type_id": 0
+        }
+      },
+      {
+        "Sequence": {
+          "id": "A",
+          "type_id": 0
+        }
+      }
+    ],
+    "pair": [
+      {
+        "SpecialToken": {
+          "id": "<|begin_of_text|>",
+          "type_id": 0
+        }
+      },
+      {
+        "Sequence": {
+          "id": "A",
+          "type_id": 0
+        }
+      },
+      {
+        "Sequence": {
+          "id": "B",
+          "type_id": 1
+        }
+      }
     ],
     "special_tokens": {
-        "<|begin_of_text|>": { "id": "<|begin_of_text|>", "ids": [100256], "tokens": ["<|begin_of_text|>"] }
+      "<|begin_of_text|>": {
+        "id": "<|begin_of_text|>",
+        "ids": [
+          100256
+        ],
+        "tokens": [
+          "<|begin_of_text|>"
+        ]
+      }
     }
   },
   "decoder": {