small fix

vocab.json

@@ -1 +1 @@
-{"<pad>": 0, "<s>": 1, "</s>": 2, "<unk>": 3, "|": 4, "E": 5, "T": 6, "O": 7, "A": 8, "I": 9, "N": 10, "H": 11, "S": 12, "R": 13, "L": 14, "D": 15, "U": 16, "Y": 17, "W": 18, "M": 19, "C": 20, "G": 21, "F": 22, "P": 23, "B": 24, "K": 25, "'": 26, "V": 27, "X": 28, "J": 29, "Q": 30, "Z": 31}
+{"<pad>": 0, "<s>": 1, "</s>": 2, "<unk>": 3, "|": 4, "E": 5, "T": 6, "O": 7, "A": 8, "I": 9, "N": 10, "H": 11, "S": 12, "R": 13, "L": 14, "D": 15, "U": 16, "Y": 17, "W": 18, "M": 19, "C": 20, "G": 21, "F": 22, "P": 23, "B": 24, "K": 25, "'": 26, "V": 27, "J": 28, "X": 29, "Q": 30, "Z": 31}