Fix callback-example.yaml
The runtime expression [must be quoted](http://www.yaml.org/spec/1.2/spec.html#id2788859) as it starts with a '{' - an [indicator character](http://www.yaml.org/spec/1.2/spec.html#c-indicator)
Also added 'openapi' and 'info' properties because they are required and, thus, the spec file is invalid without them.
MODIFY
examples/v3.0/callback-example.yaml
examples/v3.0/callback-example.yaml
+openapi: 3.0.0
+info:
+ title: Callback Example
+ version: 1.0.0
paths:
/streams:
post:
@@ -32,7 +36,7 @@ paths:
onData:
# when data is sent, it will be sent to the `callbackUrl` provided
# when making the subscription PLUS the suffix `/data`
- {$request.query.callbackUrl}/data:
+ '{$request.query.callbackUrl}/data':
post:
requestBody:
description: subscription payload

Fix callback-example.yaml

The runtime expression [must be quoted](http://www.yaml.org/spec/1.2/spec.html#id2788859) as it starts with a '{' - an [indicator character](http://www.yaml.org/spec/1.2/spec.html#c-indicator)

Also added 'openapi' and 'info' properties because they are required and, thus, the spec file is invalid without them.