SSF: Example of Stream Creation Response

[TakahikoKawasaki]

The first paragraph of the "7.1.1.1. Creating a Stream" section in the SSF specification states as follows.

On receiving a valid request the Event Transmitter responds with a "201 Created" response containing a JSON [RFC7159] representation of the stream's configuration in the body.

However, the non-normative example response in the section starts with:

HTTP/1.1 200 OK

The example should be fixed to:

HTTP/1.1 201 Created