Update README.md

README.md

@@ -1,6 +1,8 @@
 ---
 language:
 - th
+task_categories:
+- conversational
 ---
 ---
 # Dataset Card for Nexdata/Pushtu_Conversational_Speech_Data_by_Telephone
@@ -31,4 +33,4 @@ speech recognition; voiceprint recognition;
 the word accuracy rate is not less than 95%
 
 # Licensing Information
-Commerical License
+Commercial License