minor: rst glitch

Author: Sam Kleinman

source/administration/sharding-architectures.txt

@@ -114,7 +114,7 @@ created subsequently, may reside on any shard in the cluster.
 High Availability and MongoDB
 -----------------------------
 
-A :ref:`production <sharding-production-architecture` :term:`shard
+A :ref:`production <sharding-production-architecture>` :term:`shard
 cluster` has no single point of failure. This section introduces the
 availability concerns for MongoDB deployments, and highlights
 potential failure scenarios and available resolutions: