Update taxonomy.json

taxonomy.json

@@ -192,9 +192,6 @@
     {
         "name": "Discourse Analysis"
     },
-    {
-        "name": "Authorship Verification"
-    },
     {
         "name": "Audio Generation and Processing",
         "children":[
@@ -202,6 +199,9 @@
           {"name": "Speech Synthesis"}
         ]
     },
+    {
+        "name": "Authorship Verification"
+    },
     {
         "name": "Acronyms and Abbreviations Detection and Expansion"
     },