docs: prevent warnings due to autosectionlabel

Changeset 58ad30cf91f0 ("docs: fix reference to core-api/namespaces.rst")
enabled a new feature at Sphinx: it will now generate index for each
document title, plus to each chapter inside it.

There's a drawback, though: one document cannot have two sections
with the same name anymore.

A followup patch will change the logic of autosectionlabel to
avoid most creating references for every single section title,
but still we need to be able to reference the chapters inside
a document.

There are a few places where there are two chapters with the
same name. This patch renames one of the chapters, in order to
avoid symbol conflict within the same document.

PS.: as I don't speach Chinese, I had some help from a friend
(Wen Liu) at the Chinese translation for "publishing patches"
for this document:

Documentation/translations/zh_CN/process/5.Posting.rst

Fixes: 58ad30cf91f0 ("docs: fix reference to core-api/namespaces.rst")
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>
Link: https://lore.kernel.org/r/2bffb9[e-mail]
Signed-off-by: Jonathan Corbet <[e-mail]>

Documentation/driver-api/80211/mac80211-advanced.rst

···
 .. kernel-doc:: net/mac80211/sta_info.c
    :doc: STA information lifetime rules
 
-Aggregation
-===========
+Aggregation Functions
+=====================
 
 .. kernel-doc:: net/mac80211/sta_info.h
    :functions: sta_ampdu_mlme
···
 .. kernel-doc:: net/mac80211/sta_info.h
    :functions: tid_ampdu_rx
 
-Synchronisation
-===============
+Synchronisation Functions
+=========================
 
 TBD
 

Documentation/driver-api/dmaengine/index.rst

···
 DMAEngine documentation provides documents for various aspects of DMAEngine
 framework.
 
-DMAEngine documentation
------------------------
+DMAEngine development documentation
+-----------------------------------
 
 This book helps with DMAengine internal APIs and guide for DMAEngine device
 driver writers.

Documentation/filesystems/ecryptfs.rst

···
 - Libgcrypt
 
 
-Notes
-=====
+.. note::
 
-In the beta/experimental releases of eCryptfs, when you upgrade
-eCryptfs, you should copy the files to an unencrypted location and
-then copy the files back into the new eCryptfs mount to migrate the
-files.
+   In the beta/experimental releases of eCryptfs, when you upgrade
+   eCryptfs, you should copy the files to an unencrypted location and
+   then copy the files back into the new eCryptfs mount to migrate the
+   files.
 
 
 Mount-wide Passphrase

Documentation/kernel-hacking/hacking.rst

···
 
 This is the variant of `EXPORT_SYMBOL()` that allows specifying a symbol
 namespace. Symbol Namespaces are documented in
-:ref:`Documentation/core-api/symbol-namespaces.rst <Symbol Namespaces>`
+:doc:`../core-api/symbol-namespaces`
 
 :c:func:`EXPORT_SYMBOL_NS_GPL()`
 --------------------------------
···
 
 This is the variant of `EXPORT_SYMBOL_GPL()` that allows specifying a symbol
 namespace. Symbol Namespaces are documented in
-:ref:`Documentation/core-api/symbol-namespaces.rst <Symbol Namespaces>`
+:doc:`../core-api/symbol-namespaces`
 
 Routines and Conventions
 ========================

Documentation/media/kapi/v4l2-controls.rst

···
    In practice the basic usage as described above is sufficient for most drivers.
 
 
-Inheriting Controls
--------------------
+Inheriting Sub-device Controls
+------------------------------
 
 When a sub-device is registered with a V4L2 driver by calling
 v4l2_device_register_subdev() and the ctrl_handler fields of both v4l2_subdev
···
 It is recommended not to use this function from inside the control ops.
 
 
-Inheriting Controls
--------------------
+Preventing Controls inheritance
+-------------------------------
 
 When one control handler is added to another using v4l2_ctrl_add_handler, then
 by default all controls from one are merged to the other. But a subdev might

Documentation/networking/snmp_counter.rst

···
 
 A packet loss is detected and recovered by TLP.
 
-TCP Fast Open
-=============
+TCP Fast Open description
+=========================
 TCP Fast Open is a technology which allows data transfer before the
 3-way handshake complete. Please refer the `TCP Fast Open wiki`_ for a
 general description.

Documentation/powerpc/ultravisor.rst

···
 .. contents::
     :depth: 3
 
-Protected Execution Facility
-############################
+Introduction
+############
 
     Protected Execution Facility (PEF) is an architectural change for
     POWER 9 that enables Secure Virtual Machines (SVMs). DD2.3 chips

Documentation/security/siphash.rst

···
 transmitted out of the kernel. This is only remotely useful over `jhash` as a
 means of mitigating hashtable flooding denial of service attacks.
 
-Generating a key
-================
+Generating a HalfSipHash key
+============================
 
 Keys should always be generated from a cryptographically secure source of
 random numbers, either using get_random_bytes or get_random_once:
···
 
 If you're not deriving your key from here, you're doing it wrong.
 
-Using the functions
-===================
+Using the HalfSipHash functions
+===============================
 
 There are two variants of the function, one that takes a list of integers, and
 one that takes a buffer::

Documentation/target/tcmu-design.rst

···
 
 .. Contents:
 
-   1) TCM Userspace Design
+   1) Design
      a) Background
      b) Benefits
      c) Design constraints
···
    3) A final note
 
 
-TCM Userspace Design
-====================
+Design
+======
 
 TCM is another name for LIO, an in-kernel iSCSI target (server).
 Existing TCM targets run in the kernel.  TCMU (TCM in Userspace)

Documentation/translations/zh_CN/process/5.Posting.rst

···
 
 .. _cn_development_posting:
 
-发送补丁
+发布补丁
 ========
 
 迟早，当您的工作准备好提交给社区进行审查，并最终包含到主线内核中时。不出所料，

Documentation/x86/intel-iommu.rst

···
 When DMAR is enabled for use, you will notice..
 
 PCI-DMA: Using DMAR IOMMU
+-------------------------
 
 Fault reporting
----------------
+^^^^^^^^^^^^^^^
 
 ::