message: docs: correct sentence
diff: @@ -87,7 +87,7 @@ Superset provides:
  * A lightweight semantic layer which empowers data analysts to quickly define custom dimensions and metrics
  * Out-of-the-box support for most SQL-speaking databases
  * Seamless, in-memory asynchronous caching and queries
  -* An extensible security model that allows configuration of very intricate rules on
  +* An extensible security model that allows configuration of very intricate rules
  on who can access which product features and datasets.
  * Integration with major
  authentication backends (database, OpenID, LDAP, OAuth, REMOTE_USER, etc)
  