DOCS-14395 fix minor indentation typo

Author: andf-mongodb

source/reference/method/db.auth.txt

@@ -223,11 +223,11 @@ Starting in MongoDB 5.0, if your connection specifies the
 :option:`--apiStrict` option, you may not use the :method:`db.auth()` 
 method to:
 
-  - Authenticate again as the same user on the same database.
-  - Authenticate as a different user when previously authenticated 
-    on the same database.
-  - Authenticate with a new database when previously authenticated on a 
-    different database.
+- Authenticate again as the same user on the same database.
+- Authenticate as a different user when previously authenticated 
+  on the same database.
+- Authenticate with a new database when previously authenticated on a 
+  different database.
 
 
 Authenticate when Connecting to the Shell