Update JSON.md

docs/builtin_module_docs/JSON.md

@@ -27,7 +27,7 @@ Expects ```str``` for keys, and the following types for values:
 ### Arguments
 | Argument      | Information       |
 | ------------- | ----------------- |
-| ```object```    | object to encode    |
+| ```object```    | ```dict``` object to encode    |
 
 ### Returns
 Return ```str``` that is encoded JSON string.
@@ -52,4 +52,4 @@ Decodes JSON string into a ```dict``` that contains the information.
 | ```object```    | JSON string (```str```) to decode    |
 
 ### Returns
-Return ```dict``` that is the decoded information.
+Return ```dict``` that is the decoded information.