NR suggestion

Author: mcmorisi

source/reference/aggregation.txt

@@ -104,7 +104,7 @@ find the total number of documents which have the exact array
    method and may not support the same filters. ``countDocuments`` uses the
    ``$match`` stage of the aggregation pipeline to filter documents. To learn more
    about limitations of the ``$match`` stage, see :manual:`$match Restrictions </reference/operator/aggregation/match/#restrictions>`
-   in the MongoDB Server documentation.
+   in the MongoDB Server manual.
 
 Distinct
 ~~~~~~~~