docs: kernel_include.py: propose alternatives

docs: kernel_include.py: propose alternatives

Specially when using c::namespace, it is not hard to break
a reference by forgetting to add a domain. Also, different
cases and using "-"/"_" the wrong way are typical cases that
people often gets wrong.

We might use a more complex logic here to also check for typos,
but let's keep it plain, simple.

This is enough to get thos exeptions from media controller:

  .../include/uapi/linux/media.h:26: WARNING: Invalid xref: c:type:`media_device_info`. Possible alternatives:
	c:type:`MC.media_device_info` (from mediactl/media-ioc-device-info)
  .../include/uapi/linux/media.h:149: WARNING: Invalid xref: c:type:`media_entity_desc`. Possible alternatives:
	c:type:`MC.media_entity_desc` (from mediactl/media-ioc-enum-entities)
  .../include/uapi/linux/media.h:228: WARNING: Invalid xref: c:type:`media_link_desc`. Possible alternatives:
	c:type:`MC.media_link_desc` (from mediactl/media-ioc-enum-links)
  .../include/uapi/linux/media.h:235: WARNING: Invalid xref: c:type:`media_links_enum`. Possible alternatives:
	c:type:`MC.media_links_enum` (from mediactl/media-ioc-enum-links)
  .../include/uapi/linux/media.h:212: WARNING: Invalid xref: c:type:`media_pad_desc`. Possible alternatives:
	c:type:`MC.media_pad_desc` (from mediactl/media-ioc-enum-links)
  .../include/uapi/linux/media.h:298: WARNING: Invalid xref: c:type:`media_v2_entity`. Possible alternatives:
	c:type:`MC.media_v2_entity` (from mediactl/media-ioc-g-topology)
  .../include/uapi/linux/media.h:312: WARNING: Invalid xref: c:type:`media_v2_interface`. Possible alternatives:
	c:type:`MC.media_v2_interface` (from mediactl/media-ioc-g-topology)
  .../include/uapi/linux/media.h:307: WARNING: Invalid xref: c:type:`media_v2_intf_devnode`. Possible alternatives:
	c:type:`MC.media_v2_intf_devnode` (from mediactl/media-ioc-g-topology)
  .../include/uapi/linux/media.h:341: WARNING: Invalid xref: c:type:`media_v2_link`. Possible alternatives:
	c:type:`MC.media_v2_link` (from mediactl/media-ioc-g-topology)
  .../include/uapi/linux/media.h:333: WARNING: Invalid xref: c:type:`media_v2_pad`. Possible alternatives:
	c:type:`MC.media_v2_pad` (from mediactl/media-ioc-g-topology)
  .../include/uapi/linux/media.h:349: WARNING: Invalid xref: c:type:`media_v2_topology`. Possible alternatives:
	c:type:`MC.media_v2_topology` (from mediactl/media-ioc-g-topology)

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <4c75d277e950e619ea00ba2dea336853a4aac976.1759329363.git.mchehab+huawei@kernel.org>