Add missing word

Author: npentrel

source/reference/method/sh.balancerCollectionStatus.txt

@@ -55,7 +55,7 @@ The :method:`sh.balancerCollectionStatus()` method takes the following parameter
 
      - .. _method-balancercollectionstatus-namespace:
 
-       The of the collection to shard in the form
+       The :term:`namespace` of the collection to shard in the form
        ``"<database>.<collection>"``.
 
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