updated CRUD operations page to remove nested components

Author: caitlindavey

source/reference/crud-operations.txt

@@ -285,15 +285,13 @@ when querying and their corresponding methods as examples.
        If the read concern is specifed on the client or collection level, or
        if the read concern is specified as a find option, it will NOT be passed
        by the driver to the explain command.
-
-       .. note::
-
-         The information returned by the server for the ``explain`` command
-         varies with server version and deployment topology. The driver's
-         ``explain`` method returns whatever the server provided.
-
-         **The return value of ``explain`` method is not part of the driver's
-         public API and depends on the server version and deployment topology.**
+       
+       The information returned by the server for the ``explain`` command 
+       varies with server version and deployment topology. The driver's
+       ``explain`` method returns whatever the server provided.
+       
+       **The return value of the ``explain`` method is not part of the driver's
+       public API and depends on the server version and deployment topology.**
 
    * - ``hint(Hash)``
      - Provides the query with an