Adding Elba release OpenAPI spec in Getting started page in SODA Foundation Documents

[nguptaopensds]

Issue/Feature Description: The link for OpenAPI Spec is not updated, Elba swagger.yaml needs to be updated in that.

Why this issue to fixed / feature is needed(give scenarios or use cases): Fixing SODA Documentation

How to reproduce, in case of a bug:

Other Notes / Environment Information: (Please give the env information, log link or any useful information for this issue)