Update tacred.py

tacred.py

@@ -70,13 +70,8 @@ published at ACL 2020.
 Note 2: This Datasetreader changes the offsets of the following fields, to conform with standard Python usage (see
 #_generate_examples()):
 - subj_end to subj_end + 1 (make end offset exclusive)
-- oj_end to oj_end + 1 (make end offset exclusive)
+- obj_end to obj_end + 1 (make end offset exclusive)
 - stanford_head to stanford_head - 1 (make head offsets 0-based)
-
-It also changes the names of some fields:
-- token -> tokens
-- stanford_ner -> ner_tags
-- stanford_pos -> pos_tags
 """
 
 _HOMEPAGE = "https://nlp.stanford.edu/projects/tacred/"