Update taxonomy.json

taxonomy.json

@@ -152,13 +152,7 @@
          {"name": "Backdoor Attacks"}
          ]
     },
-    {
-        "name": "Biases in NLP",
-        "children": [
-        {"name": "Gender Bias"},
-        {"name": "Bias Detection"}
-        ]
-    },
+
     {
         "name": "Commonsense Reasoning"
     },
@@ -194,7 +188,15 @@
         "name": "Evaluation Techniques"
     },
     {
-        "name": "Ethics"
+        "name": "Ethics",
+        "children": [
+        {"name": "Biases in NLP",
+         "children": [
+          {"name": "Gender Bias"},
+          {"name": "Bias Detection"}
+         ]
+        }
+      ] 
     },
     {
         "name": "Argument Mining"