(Check against and update referenced Python version: 3.6)

Author: PiDelport

src/backports/weakref.py

@@ -1,5 +1,5 @@
 """
-Partial backport of Python 3.5's weakref module:
+Partial backport of Python 3.6's weakref module:
 
     finalize (new in Python 3.4)
 

tests/test_weakref.py

@@ -1,5 +1,5 @@
 """
-Partial backport of Python 3.5's test.test_weakref:
+Partial backport of Python 3.6's test.test_weakref:
 
     FinalizeTestCase