DOCSP-33304 Clarify Mirrored Reads (#4945) (#5160)

* DOCSP-33304 Clarify Mirrored Reads

* *

* punctuation

Author: ajhuh-mdb

source/replication.txt

@@ -270,16 +270,16 @@ samplingRate: 0.0 }``:
 
 With a sampling rate greater than ``0.0``, the primary mirrors
 :ref:`supported reads <mirrored-reads-supported-operations>` to a subset
-of :rsconf:`electable <members[n].priority>` secondaries. With a
-sampling rate of ``0.01``, the primary mirrors one percent of the
-supported reads it receives to each electable secondary.
-
-Consider a replica set that consists of one primary and two electable
-secondaries. If the primary receives ``1000`` operations that can be
-mirrored and the sampling rate is ``0.01``, the primary sends
-about ``10`` reads to electable secondaries. Each electable secondary
-receives only a fraction of the 10 reads. Each read that is mirrored, is
-sent to a randomly chosen non-empty selection of electable secondaries.
+of :rsconf:`electable <members[n].priority>` secondaries. With a sampling rate 
+of ``0.01``, the primary mirrors one percent of the supported reads it receives 
+to a selection of electable secondaries.
+
+For example, consider a replica set that consists of one primary and two 
+electable secondaries. If the primary receives ``1000`` operations that can be
+mirrored and the sampling rate is ``0.01``, the primary mirrors about ``10`` 
+supported reads to electable secondaries. Each electable secondary receives only 
+a fraction of the 10 reads. The primary sends each mirrored read to a randomly 
+chosen, non-empty selection of electable secondaries.
 
 Change the Sampling Rate for Mirrored Reads
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