Readme does not match tables

[goelalex]

The readme needs to be updated with latest decision table column names in the l2 folder

It would be helpful if there were an example as well.

[brynrhodes]

@goelalex , which readme are you referring to?

[goelalex]

@brynrhodes https://github.com/WorldHealthOrganization/smart-anc/blob/master/input/l2/readme.md