Fixed incorrect anchor links being generated by swapping the heading and index directive

Author: rosstitmarsh

Doc/c-api/memoryview.rst

@@ -2,12 +2,12 @@
 
 .. _memoryview-objects:
 
-.. index::
-   pair: object; memoryview
-
 MemoryView objects
 ------------------
 
+.. index::
+   pair: object; memoryview
+
 A :class:`memoryview` object exposes the C level :ref:`buffer interface
 <bufferobjects>` as a Python object which can then be passed around like
 any other object.

Doc/reference/expressions.rst

@@ -136,13 +136,13 @@ exception.
 
 .. _private-name-mangling:
 
+Private name mangling
+^^^^^^^^^^^^^^^^^^^^^
+
 .. index::
    pair: name; mangling
    pair: private; names
 
-Private name mangling
-^^^^^^^^^^^^^^^^^^^^^
-
 When an identifier that textually occurs in a class definition begins with two
 or more underscore characters and does not end in two or more underscores, it
 is considered a :dfn:`private name` of that class.
@@ -2669,13 +2669,13 @@ expression. (To create an empty tuple, use an empty pair of parentheses:
 
 .. _iterable-unpacking:
 
+Iterable unpacking
+------------------
+
 .. index::
    pair: iterable; unpacking
    single: * (asterisk); in expression lists
 
-Iterable unpacking
-------------------
-
 In an expression list or tuple, list or set display, any expression
 may be prefixed with an asterisk (``*``).
 This denotes :dfn:`iterable unpacking`.