media: docs: sliced-vbi: fix V4L2_SLICED_WSS_625 docs

While fixing issues with PDF generation, I noticed that
bit 8 was missing for WSS 625 format.

While here, convert the literal block into a tables,
as it becomes more visible.

I opted to move the payload into a separate table, as
Sphinx has troubles with complex nested tables.

This way, it should work fine on both html and LaTeX/PDF
formats.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Documentation/userspace-api/media/v4l/dev-sliced-vbi.rst

@@ -253,13 +253,7 @@ Sliced VBI services
 
 	:ref:`en300294`
       - PAL/SECAM line 23
-      -
-
-	::
-
-	    Byte         0                 1
-		  msb         lsb  msb           lsb
-	     Bit  7 6 5 4 3 2 1 0  x x 13 12 11 10 9
+      -  See :ref:`v4l2-sliced-wss-625-payload` below.
     * - ``V4L2_SLICED_VBI_525``
       - 0x1000
       - :cspan:`2` Set of services applicable to 525 line systems.
@@ -282,6 +276,21 @@ format while i/o is in progress (between a
 :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` call, and after the first
 :c:func:`read()` or :c:func:`write()` call).
 
+.. _v4l2-sliced-wss-625-payload:
+
+V4L2_SLICED_WSS_625 payload
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The payload for ``V4L2_SLICED_WSS_625`` is:
+
+           +-----+------------------+-----------------------+
+	   |Byte |        0         |           1           |
+           +-----+--------+---------+-----------+-----------+
+	   |     | msb    | lsb     | msb       | lsb       |
+           |     +-+-+-+--+--+-+-+--+--+-+--+---+---+--+-+--+
+	   | Bit |7|6|5|4 | 3|2|1|0 | x|x|13|12 | 11|10|9|8 |
+           +-----+-+-+-+--+--+-+-+--+--+-+--+---+---+--+-+--+
+
 Reading and writing sliced VBI data
 ===================================
 

Documentation/userspace-api/media/v4l/vidioc-g-sliced-vbi-cap.rst

@@ -162,13 +162,7 @@ the sliced VBI API is unsupported or ``type`` is invalid.
 
 	:ref:`itu1119`
       - PAL/SECAM line 23
-      -
-
-	::
-
-	    Byte        0                 1
-		 msb         lsb  msb           lsb
-	    Bit  7 6 5 4 3 2 1 0  x x 13 12 11 10 9
+      - See :ref:`v4l2-sliced-vbi-cap-wss-625-payload` below.
     * - ``V4L2_SLICED_VBI_525``
       - 0x1000
       - :cspan:`2` Set of services applicable to 525 line systems.
@@ -180,6 +174,22 @@ the sliced VBI API is unsupported or ``type`` is invalid.
 
     \normalsize
 
+.. _v4l2-sliced-vbi-cap-wss-625-payload:
+
+V4L2_SLICED_VBI_CAP WSS_625 payload
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The payload for ``V4L2_SLICED_WSS_625`` is:
+
+	    +-----+------------------+-----------------------+
+	    |Byte |        0         |           1           |
+	    +-----+--------+---------+-----------+-----------+
+	    |     | msb    | lsb     | msb       | lsb       |
+	    |     +-+-+-+--+--+-+-+--+--+-+--+---+---+--+-+--+
+	    | Bit |7|6|5|4 | 3|2|1|0 | x|x|13|12 | 11|10|9|8 |
+	    +-----+-+-+-+--+--+-+-+--+--+-+--+---+---+--+-+--+
+
+
 Return Value
 ============