PramField: document types (#249)

Author: aviau

content/components/params.mdx

@@ -40,6 +40,10 @@ icon: "text-size"
 
 <ParamField body="type" type="string">
   Expected type of the parameter's value
+  
+  Supports `number`, `string`, `bool`, `object`.
+
+  Arrays can be defined using the `[]` suffix. For example `string[]`.
 </ParamField>
 
 <ParamField body="required" type="boolean">