substitute serverSelectionTimeoutMS

Author: kay-kim

source/core/distributed-queries.txt

@@ -274,11 +274,12 @@ Persistent Network Errors
    help address transient network errors but not persistent network
    errors.
 
-Failover Period Exceeds 30 Seconds
+Failover Period Exceeds :urioption:`serverSelectionTimeoutMS`
    Upon encountering a failover and receiving the ``not master`` error,
-   the drivers wait 30 seconds before retrying once. The retryable
-   feature does not addresss instance where the failover period exceeds
-   30 seconds.
+   the drivers wait :urioption:`serverSelectionTimeoutMS` seconds to
+   determine the new primary before retrying. The retryable feature
+   does not addresss instance where the failover period exceeds
+   :urioption:`serverSelectionTimeoutMS`.
 
 .. warning::