DOCS-9916: typo: i.e.

Author: kay-kim

source/core/read-preference.txt

@@ -26,7 +26,7 @@ Read Preference
    [#edge-cases-2-primaries]_
 
 .. note:: The read preference does not affect the visibility of data;
-   i.e, clients can see the results of writes before they are acknowledged
+   i.e. clients can see the results of writes before they are acknowledged
    or have propagated to a majority of replica set members:
 
    .. include:: /includes/list-visibility-of-data.rst