docs: update README.md (#484)

authenticaton -> authentication

README.md

@@ -31,7 +31,7 @@ Dataherald is a natural language-to-SQL engine built for enterprise-level questi
 
 This repository contains four components under `/services` which can be used together to set up an end-to-end Dataherald deployment:
 
-1. Engine: The core natural language-to-SQL engine. If you would like to use the dataherald API without users or authenticaton, running the engine will suffice.
+1. Engine: The core natural language-to-SQL engine. If you would like to use the dataherald API without users or authentication, running the engine will suffice.
 2. Enterprise: The application API layer which adds authentication, organizations and users, and other business logic to Dataherald. 
 3. Admin-console: The front-end component of Dataherald which allows a GUI for configuration and observability. You will need to run both engine and enterprise for the admin-console to work.
 4. Slack: A slackbot which allows users from a slack channel to interact with dataherald. Requires both engine and enterprise to run.