fix: typo

Author: norival

reference/configuration/security.rst

@@ -863,7 +863,7 @@ Learn more about user checkers in :doc:`/security/user_checkers`.
 providers
 ---------
 
-This options defines how the application users are loaded (from a database,
+This option defines how the application users are loaded (from a database,
 an LDAP server, a configuration file, etc.) Read the following articles to learn
 more about each of those providers: