docs: releases: migration guide: 3.6.0: fix backtics usage

  cleared on :c:func:`bt_enable`. Callbacks can now be registered before the initial

  call to :c:func:`bt_enable`, and should no longer be re-registered after a :c:func:`bt_disable`

  :c:func:`bt_enable` cycle. (:github:`63693`)

* The Bluetooth UUID has been modified to rodata in ``BT_UUID_DECLARE_16``, ``BT_UUID_DECLARE_32`

  and ``BT_UUID_DECLARE_128`` as the return value has been changed to `const`.

  Any pointer to a UUID must be prefixed with `const`, otherwise there will be a compilation warning.

  For example change ``struct bt_uuid *uuid = BT_UUID_DECLARE_16(xx)`` to

* The Bluetooth UUID has been modified to rodata in ``BT_UUID_DECLARE_16``, ``BT_UUID_DECLARE_32``

  and ``BT_UUID_DECLARE_128`` as the return value has been changed to ``const``.

  Any pointer to a UUID must be prefixed with ``const``, otherwise there will be a compilation

  warning. For example change ``struct bt_uuid *uuid = BT_UUID_DECLARE_16(xx)`` to

  ``const struct bt_uuid *uuid = BT_UUID_DECLARE_16(xx)``. (:github:`66136`)

* The :c:func:`bt_l2cap_chan_send` API no longer allocates buffers from the same pool as its `buf`

  parameter when segmenting SDUs into PDUs. In order to reproduce the previous behavior, the

    ``BT_AUDIO_CODEC_LC3_CHAN_COUNT`` is now ``BT_AUDIO_CODEC_CAP_TYPE_CHAN_COUNT``,

    ``BT_AUDIO_CODEC_LC3_FREQ`` is now ``BT_AUDIO_CODEC_CAP_TYPE_FREQ``, and

    ``BT_AUDIO_CODEC_CONFIG_LC3_FREQ`` is now ``BT_AUDIO_CODEC_CFG_FREQ``, etc.

    Similarly the ``enum``s have also been renamed.

    Similarly the enumerations have also been renamed.

    E.g. ``bt_audio_codec_config_freq`` is now ``bt_audio_codec_cfg_freq``,

    ``bt_audio_codec_capability_type`` is now ``bt_audio_codec_cap_type``,

    ``bt_audio_codec_config_type`` is now ``bt_audio_codec_cfg_type``, etc. (:github:`67024`)

  * ``z_user_to_copy`` to :c:func:`k_usermode_to_copy`

  * ``z_user_string_copy`` to :c:func:`k_usermode_string_copy`

  * ``z_user_string_alloc_copy`` to :c:func:`k_usermode_string_alloc_copy`

  * ``z_user_alloc_from_copy```` to :c:func:`k_usermode_alloc_from_copy`

  * ``z_user_alloc_from_copy`` to :c:func:`k_usermode_alloc_from_copy`

  * ``z_user_string_nlen`` to :c:func:`k_usermode_string_nlen`

  * ``z_dump_object_error`` to :c:func:`k_object_dump_error`

  * ``z_object_validate`` to :c:func:`k_object_validate`