GitHub issue: https://github.com/devfile/api/issues/758 

/area documentation

Which area this documentation change is related to?

/area api

Issue details

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

While reviewing PR 135, I noticed the content for this topic needs updating.

1. The component table should include all supported components, not just the container type. We should include kubernetes, openshift, and volume as well

1. the volume object seems to be a consolidation of the volumeMount and{{ volume}} objects. The first 2 properties belong to volumeMount while the last 2 belong to volume