Add text type to type examples

REQUEST_FORMAT.md

@@ -13,8 +13,16 @@ and type-dependent data. e.g.
 }
 ```
 
+```
+{
+    "type": "text",
+    "text": "This will hopefully be useful information."
+}
+```
+
 ```
 {
     "type": "miss"
 }
 ```
+Currently the three types shown above are supporting along side with the shown type-dependent data.
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