Normalize layout label names

config.json

@@ -149,45 +149,45 @@
   "freeze_backbone_batch_norms": true,
   "hidden_expansion": 1.0,
   "id2label": {
-    "0": "Caption",
-    "1": "Footnote",
-    "2": "Formula",
-    "3": "List-item",
-    "4": "Page-footer",
-    "5": "Page-header",
-    "6": "Picture",
-    "7": "Section-header",
-    "8": "Table",
-    "9": "Text",
-    "10": "Title",
-    "11": "Document Index",
-    "12": "Code",
-    "13": "Checkbox-Selected",
-    "14": "Checkbox-Unselected",
-    "15": "Form",
-    "16": "Key-Value Region"
+    "0": "caption",
+    "1": "footnote",
+    "2": "formula",
+    "3": "list_item",
+    "4": "page_footer",
+    "5": "page_header",
+    "6": "picture",
+    "7": "section_header",
+    "8": "table",
+    "9": "text",
+    "10": "title",
+    "11": "document_index",
+    "12": "code",
+    "13": "checkbox_selected",
+    "14": "checkbox_unselected",
+    "15": "form",
+    "16": "key_value_region"
   },
   "initializer_bias_prior_prob": null,
   "initializer_range": 0.01,
   "is_encoder_decoder": true,
   "label2id": {
-    "Caption": 0,
-    "Checkbox-Selected": 13,
-    "Checkbox-Unselected": 14,
-    "Code": 12,
-    "Document Index": 11,
-    "Footnote": 1,
-    "Form": 15,
-    "Formula": 2,
-    "Key-Value Region": 16,
-    "List-item": 3,
-    "Page-footer": 4,
-    "Page-header": 5,
-    "Picture": 6,
-    "Section-header": 7,
-    "Table": 8,
-    "Text": 9,
-    "Title": 10
+    "caption": 0,
+    "checkbox_selected": 13,
+    "checkbox_unselected": 14,
+    "code": 12,
+    "document_index": 11,
+    "footnote": 1,
+    "form": 15,
+    "formula": 2,
+    "key_value_region": 16,
+    "list_item": 3,
+    "page_footer": 4,
+    "page_header": 5,
+    "picture": 6,
+    "section_header": 7,
+    "table": 8,
+    "text": 9,
+    "title": 10
   },
   "label_noise_ratio": 0.5,
   "layer_norm_eps": 1e-05,