Fix formatting (hopefully) for PEP 549.

pep-0549.rst

@@ -11,7 +11,7 @@ Post-History: 4-Sep-2017
 
 
 Abstract
---------
+========
 
     Python's descriptor protocol requires that descriptors
     be members of the *type* of an object.  This PEP proposes
@@ -20,7 +20,7 @@ Abstract
     would permit using properties in modules.
 
 Rationale 
----------
+=========
 
     Python's descriptor protocol guides programmers towards
     elegant API design.  If your class supports a data-like
@@ -60,7 +60,7 @@ Rationale
     currently only forsees this as being useful for module objects.
 
 Implementation
---------------
+==============
 
     The basic idea is simple: modify the ``tp_descr_get`` and ``tp_descr_set``
     functions exposed by ``PyModule_Type`` to inspect the attribute interacted
@@ -86,20 +86,20 @@ Implementation
     is set is on ``PyProperty_Type``.
 
 Prototype
----------
+=========
 
     A prototype of this functionality is under development
     at GitHub [github]_.
 
 Acknowledgements
-----------------
+================
 
     Armin Rigo essentially proposed this mechanism when presented
     with the idea of "module properties", and educated the author
     both on the complexities of the problem and the proper solution.
 
 References
-----------
+==========
 
 .. [github]
    https://github.com/larryhastings/cpython/tree/module-properties