Update source/reference/replica-configuration.txt

Author: kstirman

source/reference/replica-configuration.txt

@@ -660,5 +660,5 @@ the following operation, to ensure that a write operation propagates
 to at least one instance with an SSD.
 
 .. [#read-and-write-tags] Since read preferences and write concerns
-   use the value of fields in tag sets differently, for larger
+   use the value of fields in tag sets differently, larger
    deployments will have some redundancy.