Error in middleware intro example (doc) #841

Bug

Package Version: 7.0.2

Code

The middleware example on https://dojo.io/learn/middleware/introduction (framework/blob/master/docs/en/middleware/introduction.md in the repo) has a bug in this line:

<div>{`Middleware property value: ${properties.middlewareProp}`}</div>

That should be properties().middlewareProp -- otherwise it only produces undefined no matter what.

Expected behavior:

The example code should run as written.

Actual behavior:

The line always produces undefined.