simplifies some language on the database profiler page (#428)

Author: jmd-mongo

source/reference/database-profiler.txt

@@ -57,7 +57,8 @@ operations on a standalone:
         name: Find Operation
         content: |
             The following document in the :data:`system.profile
-            <<database>.system.profile>` reflects a find operation:
+            <<database>.system.profile>` collection shows metrics for
+            a sample query operation on the ``test.report`` collection:
 
             .. code-block:: javascript
 
@@ -143,8 +144,9 @@ operations on a standalone:
             :dbcommand:`delete`) operation contains the entire update
             command.
 
-            The following example reflects an :dbcommand:`update`
-            operation on a collection named ``report``.
+            The following document in the :data:`system.profile
+            <<database>.system.profile>` collection shows metrics for
+            a sample update operation on the ``test.report`` collection:
 
             .. code-block:: javascript