Update README.md

updated tags names in Abbreviation|Description and description section

README.md

@@ -48,8 +48,8 @@ The training dataset distinguishes between the beginning and continuation of an
 Abbreviation|Description
 -|-
 O|Outside of a named entity
-B-MIS |Beginning of a miscellaneous entity right after another miscellaneous entity
-I-MIS | Miscellaneous entity
+B-MISC |Beginning of a miscellaneous entity right after another miscellaneous entity
+I-MISC | Miscellaneous entity
 B-PER |Beginning of a person’s name right after another person’s name
 I-PER |Person’s name
 B-ORG |Beginning of an organization right after another organization