Merge branch 'introspection4' into 'master'

Fixed required item

See merge request !20

Data Formats/JSON.md

@@ -414,7 +414,7 @@ A OPTIONS method request to http://www.example.com/issues may look like this...
       ":record_id": {
         "type": "string",
         "description": "This is a string literal ':record_id'",
-        "required": "This is a string literal ':record_id'",
+        "required": true,
       }
     },
     "returns": {