Updating docs README (#2587)

* Updating docs README with API update procedure.

* Addressing comments.

Co-authored-by: Jeff Rasley <[email protected]>

Author: jomayeri

docs/README.md

@@ -47,3 +47,13 @@ You can now start a local webserver via:
 bundle exec jekyll serve
 ```
 The website should now be accessible at [http://localhost:4000](http://localhost:4000)
+
+
+## Update the Readthedocs.io API documentation
+Use the following steps to update the public API documentation.
+
+1. Make your documentation changes and push them to the rtd-staging branch. This will rebuild the docs in the staging branch.
+**NOTE**: It is acceptable to force push to this branch to overwrite previous changes.
+2. View the result of the result of the build [here](https://readthedocs.org/projects/deepspeed/builds/)
+3. Once the build is complete view the newly modified API documentation [here](https://deepspeed.readthedocs.io/en/rtd-staging/)
+4. Once you are satisfied with the changes create a new branch off of rtd-staging to push into master.