Adjust array representation in help

Author: m-kuhn

resources/function_help/json/array_filter

@@ -7,6 +7,6 @@
     {"arg":"expression","description":"an expression to evaluate on each item. The variable `@element` will be replaced by the current value."}
   ],
   "examples": [
-    { "expression": "array_filter(array(1,2,3),@element < 3)", "returns":"array: [1, 2]"}
+    { "expression": "array_filter(array(1,2,3),@element < 3)", "returns":"array: 1, 2"}
   ]
 }