[mchehab-media-next:master 323/358] htmldocs: Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-colorspace-last (if the link has no caption the label must precede a section header)

[kernel test robot]

tree:   git://linuxtv.org/mchehab/media-next.git master
head:   ca24fef0f2c857b0533f21f9a8a756f9e73d60fb
commit: 718d2153ad0de0c7c0b6891eaa7f9918d68b6d5e [323/358] media: v4l2: Make colorspace validity checks more future-proof
reproduce: make htmldocs

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-colorspace-last (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-xfer-func-last (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-ycbcr-enc-last (if the link has no caption the label must precede a section header)

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