fix

Author: mcmorisi

source/read/distinct.txt

@@ -63,6 +63,7 @@ the ``restaurants`` collection:
       :dedent:
 
    .. output::
+      :visible: false
 
       Bronx
       Brooklyn
@@ -95,6 +96,7 @@ all documents that have a ``cuisine`` field value of ``"Italian"``:
       :dedent:
 
    .. output::
+      :visible: false
 
       Bronx
       Brooklyn
@@ -155,6 +157,7 @@ the ``comment`` option to add a comment to the operation.
       :dedent:
 
    .. output:: 
+      :visible: false
 
       $1.25 Pizza
       18 East Gunhill Pizza