DOCSP-42517-remove-duplicate-shell (#348)

Author: ianf-mongodb

source/reference/options.txt

@@ -149,7 +149,7 @@ Connection Options
         <replSetName>/<hostname1><:port>,<hostname2><:port>,<...>
 
    For TLS/SSL connections (:option:`--tls <--tls>`),
-     The |mdb-shell| shell verifies that the hostname
+     The |mdb-shell| verifies that the hostname
      (specified in the :option:`--host <--host>` option or the
      connection string) matches the ``SAN`` (or, if ``SAN`` is not
      present, the ``CN``) in the certificate presented by the