Correct "mediaType" to "type" in example.

"mediaType" is an LDO keyword.  The keyword in the "media" object
is just plain "type".

Author: handrews

jsonschema-hyperschema.xml

@@ -331,7 +331,7 @@
 {
     "type": "string",
     "media": {
-        "mediaType": "text/html"
+        "type": "text/html"
     }
 }
 ]]>