Minor documentation changes relating to NullHandler, the module used for…

Minor documentation changes relating to NullHandler, the module used for handlers and references to ConfigParser.

Doc/library/logging.rst

@@ -1534,8 +1534,6 @@ subclasses. However, the :meth:`__init__` method in subclasses needs to call
 StreamHandler
 ^^^^^^^^^^^^^
 
-.. module:: logging.handlers
-
 The :class:`StreamHandler` class, located in the core :mod:`logging` package,
 sends logging output to streams such as *sys.stdout*, *sys.stderr* or any
 file-like object (or, more precisely, any object which supports :meth:`write`
@@ -1591,9 +1589,30 @@ sends logging output to a disk file.  It inherits the output functionality from
       Outputs the record to the file.
 
 
+NullHandler
+^^^^^^^^^^^
+
+.. versionadded:: 3.1
+
+The :class:`NullHandler` class, located in the core :mod:`logging` package,
+does not do any formatting or output. It is essentially a "no-op" handler
+for use by library developers.
+
+
+.. class:: NullHandler()
+
+   Returns a new instance of the :class:`NullHandler` class.
+
+
+   .. method:: emit(record)
+
+      This method does nothing.
+
 WatchedFileHandler
 ^^^^^^^^^^^^^^^^^^
 
+.. module:: logging.handlers
+
 The :class:`WatchedFileHandler` class, located in the :mod:`logging.handlers`
 module, is a :class:`FileHandler` which watches the file it is logging to. If
 the file changes, it is closed and reopened using the file name.
@@ -2306,7 +2325,7 @@ based on :mod:`configparser` functionality. The file must contain
 sections called ``[loggers]``, ``[handlers]`` and ``[formatters]``
 which identify by name the entities of each type which are defined in
 the file. For each such entity, there is a separate section which
-identified how that entity is configured. Thus, for a logger named
+identifies how that entity is configured. Thus, for a logger named
 ``log01`` in the ``[loggers]`` section, the relevant configuration
 details are held in a section ``[logger_log01]``. Similarly, a handler
 called ``hand01`` in the ``[handlers]`` section will have its