PEP 489: Tweak code formatting.

pep-0489.txt

@@ -191,7 +191,9 @@ are left out, and C code is presented with a concise Python-like syntax.
 The framework that calls the importers is explained in PEP 451
 [#pep-0451-loading]_.
 
-importlib/_bootstrap.py::
+importlib/_bootstrap.py:
+
+    ::
 
         class BuiltinImporter:
             def create_module(self, spec):
@@ -204,7 +206,9 @@ class BuiltinImporter:
                 # use a backwards compatibility shim
                 _load_module_shim(self, name)
 
-importlib/_bootstrap_external.py::
+importlib/_bootstrap_external.py:
+
+    ::
 
         class ExtensionFileLoader:
             def create_module(self, spec):
@@ -217,7 +221,9 @@ importlib/_bootstrap_external.py::
                 # use a backwards compatibility shim
                 _load_module_shim(self, name)
 
-Python/import.c (the _imp module)::
+Python/import.c (the _imp module):
+
+    ::
 
         def create_dynamic(spec):
             name = spec.name
@@ -264,7 +270,9 @@ Python/import.c (the _imp module)::
                         _PyImport_FixupExtensionObject(module, name, name)
                         return module
 
-Python/importdl.c::
+Python/importdl.c:
+
+    ::
 
         def _PyImport_LoadDynamicModuleWithSpec(spec):
             path = spec.origin
@@ -287,7 +295,9 @@ def _PyImport_LoadDynamicModuleWithSpec(spec):
             # fall back to single-phase initialization
             ....
 
-Objects/moduleobject.c::
+Objects/moduleobject.c:
+
+    ::
 
         def PyModule_FromDefAndSpec(def, spec):
             name = spec.name