Resource doc page links to a 404 specification

[jmhodges]

Describe the bug All of the EventSource documentation pages have "specification" links that all 404.

For example, the page https://argoproj.github.io/argo-events/eventsources/setup/resource/ (which I believe is this file) in the line:

Resource event-source specification is available [here](https://github.com/argoproj/argo-events/blob/master/api/event-source.md#resourceeventsource).

links to https://github.com/argoproj/argo-events/blob/master/api/event-source.md#resourceeventsource which 404s.

I'm not sure what the correct link should be.

[joebowbeer]

The event-source.md file is there now.

However, the following two files are still missing, causing broken links on other pages:

• sensor.md
• event-bus.md

https://github.com/argoproj/argo-events/blob/0d31a3e9fe5297ae1cdeebc74ef3b2fc967200ea/api/generate.sh#L1-L5

The html sources for the two above are also missing.