tech review 3

Author: norareidy

source/crud/read-write-config.txt

@@ -294,8 +294,8 @@ in your connection URI.
 
 .. note::
 
-   When communicating with a mongos instance, the {+driver-short+} ignores the
-   ``localThresholdMS`` URI option. In this case, use the
+   When selecting replica set members from a single mongos instance, the
+   {+driver-short+} ignores the ``localThresholdMS`` option. In this case, use the
    :manual:`localThreshold </reference/program/mongos/#std-option-mongos.--localThreshold>`
    command-line option.