[3.12] gh-105196: Fix indentations of section headings in C API docs (GH-105672) (#105782)

gh-105196: Fix indentations of section headings in C API docs (GH-105672)
(cherry picked from commit d32e8d6070)

Co-authored-by: TATHAGATA ROY <royzen9495@gmail.com>

Doc/c-api/float.rst

@@ -3,7 +3,7 @@
 .. _floatobjects:
 
 Floating Point Objects
-----------------------
+======================
 
 .. index:: pair: object; floating point
 
@@ -79,7 +79,7 @@ Floating Point Objects
 
 
 Pack and Unpack functions
-=========================
+-------------------------
 
 The pack and unpack functions provide an efficient platform-independent way to
 store floating-point values as byte strings. The Pack routines produce a bytes
@@ -104,7 +104,7 @@ happens in such cases is partly accidental (alas).
 .. versionadded:: 3.11
 
 Pack functions
---------------
+^^^^^^^^^^^^^^
 
 The pack routines write 2, 4 or 8 bytes, starting at *p*. *le* is an
 :c:expr:`int` argument, non-zero if you want the bytes string in little-endian
@@ -135,7 +135,7 @@ There are two problems on non-IEEE platforms:
 
 
 Unpack functions
-----------------
+^^^^^^^^^^^^^^^^
 
 The unpack routines read 2, 4 or 8 bytes, starting at *p*.  *le* is an
 :c:expr:`int` argument, non-zero if the bytes string is in little-endian format

Doc/c-api/frame.rst

@@ -134,7 +134,7 @@ See also :ref:`Reflection <reflection>`.
 
 
 Internal Frames
----------------
+^^^^^^^^^^^^^^^
 
 Unless using :pep:`523`, you will not need this.
 

Doc/c-api/slice.rst

@@ -113,7 +113,7 @@ Slice Objects
 
 
 Ellipsis Object
----------------
+^^^^^^^^^^^^^^^
 
 
 .. c:var:: PyObject *Py_Ellipsis