Normalize issue referencing style.

Misc/NEWS

@@ -80,7 +80,7 @@ Core and Builtins
 Library
 -------
 
-- Issue 2625: added missing items() call to the for loop in
+- Issue #2625: added missing items() call to the for loop in
   mailbox.MH.get_message().
 
 - Issue #5640: Fix _multibytecodec so that CJK codecs don't repeat
@@ -187,7 +187,7 @@ Core and Builtins
   the type definition cmpfunc.  The tp_compare slot has been renamed
   to tp_reserved, and is reserved for future usage.
 
-- Issue 1242657: the __len__() and __length_hint__() calls in several tools
+- Issue #1242657: the __len__() and __length_hint__() calls in several tools
   were suppressing all exceptions.  These include list() and bytearray().
 
 - Issue #4707: round(x, n) now returns an integer if x is an integer.
@@ -327,9 +327,9 @@ Core and Builtins
 Library
 -------
 
-- Issue 5694: removed spurious test output in Distutils (test_clean).
+- Issue #5694: removed spurious test output in Distutils (test_clean).
 
-- Issue 1326077: fix the formatting of SyntaxErrors by the traceback module.
+- Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
 
 - Issue #1665206 (partially): Move imports in cgitb to the top of the module
   instead of performing them in functions. Helps prevent import deadlocking in
@@ -481,7 +481,7 @@ Library
   operator module; use the abstract base classes instead.  Also removed
   the repeat() function; use mul() instead.
 
-- Issue 5021:  doctest.testfile() did not create __name__ and
+- Issue #5021:  doctest.testfile() did not create __name__ and
   collections.namedtuple() relied on __name__ being defined.
 
 - Backport importlib from Python 3.1. Only the import_module() function has
@@ -495,7 +495,7 @@ Library
 - Added a new itertools functions:  combinations_with_replacement()
   and compress().
 
-- Issue 5032:  added a step argument to itertools.count() and
+- Issue #5032:  added a step argument to itertools.count() and
   allowed non-integer arguments.
 
 - Fix and properly document the multiprocessing module's logging
@@ -582,7 +582,7 @@ Library
 - Issue #4812: add missing underscore prefix to some internal-use-only
   constants in the decimal module.  (Dec_0 becomes _Dec_0, etc.)
 
-- Issue 4790: The nsmallest() and nlargest() functions in the heapq module
+- Issue #4790: The nsmallest() and nlargest() functions in the heapq module
   did unnecessary work in the common case where no key function was specified.
 
 - Issue #4795: inspect.isgeneratorfunction() returns False instead of None when