Merge pull request OAI#1377 from bungoume/patch-1

Correction of missing changes. representations->content

Author: darrelmiller

versions/3.0.1.md

@@ -1737,7 +1737,7 @@ Response with a string type:
 
 ```yaml
 description: A simple string response
-representations:
+content:
   text/plain:
     schema:
       type: string