Create dropdown menus for examples for user guides / other documentation.

[cdrage]

/area documentation /kind bug

What mistake did you find / what is missing in the documentation?

See: https://github.com/redhat-developer/odo/pull/6126

We should make the example output as dropdown menus as well on all the tutorial guides / etc.

What is the relevance of it?

Cleaner and looks better! :)