fix: update vocab.json

Author: lfoppiano

grobid-home/models/affiliation-address-BidLSTM_CRF_FEATURES.onnx/vocab.json

@@ -205,6 +205,7 @@
     "21": "O"
   },
   "maxCharLength": 30,
+  "returnChars": false,
   "featuresIndices": [
     9,
     10,

grobid-home/models/citation-BidLSTM_CRF_FEATURES.onnx/vocab.json

@@ -2020,6 +2020,7 @@
     "37": "O"
   },
   "maxCharLength": 30,
+  "returnChars": false,
   "featuresIndices": [
     9,
     10,

grobid-home/models/date-BidLSTM_CRF_FEATURES.onnx/vocab.json

@@ -90,6 +90,7 @@
     "6": "O"
   },
   "maxCharLength": 30,
+  "returnChars": false,
   "featuresIndices": [
     9,
     10,

grobid-home/models/funding-acknowledgement-BidLSTM_CRF_FEATURES.onnx/vocab.json

@@ -190,6 +190,7 @@
     "17": "O"
   },
   "maxCharLength": 30,
+  "returnChars": false,
   "featuresIndices": [
     9,
     10,

grobid-home/models/header-BidLSTM_CRF_FEATURES.onnx/vocab.json

@@ -417,6 +417,7 @@
     "39": "O"
   },
   "maxCharLength": 30,
+  "returnChars": false,
   "featuresIndices": [
     9,
     10,

grobid-home/models/header-BidLSTM_ChainCRF_FEATURES.onnx/vocab.json

@@ -417,6 +417,7 @@
     "39": "O"
   },
   "maxCharLength": 30,
+  "returnChars": false,
   "featuresIndices": [
     9,
     10,

grobid-home/models/reference-segmenter-BidLSTM_CRF_FEATURES.onnx/vocab.json

@@ -190,6 +190,7 @@
     "5": "O"
   },
   "maxCharLength": 30,
+  "returnChars": false,
   "featuresIndices": [
     9,
     10,