Update tasks.json

tasks.json

@@ -1,5 +1,5 @@
-[
-  "text-classification": {
+{
+	"text-classification": {
 		name:     "Text Classification",
 		subtasks: [
 			{
@@ -542,4 +542,4 @@
 		hideInModels:   true,
 		hideInDatasets: true,
 	},
-]
+}