docs: ctucanfd: Use 'kernel-figure' directive instead of 'figure'

Two issues were observed in the ReST doc added by commit c3a0addefbde
("docs: ctucanfd: CTU CAN FD open-source IP core documentation.")
with Sphinx versions 2.4.4 and 4.5.0.

The plain "figure" directive broke "make pdfdocs" due to a missing
PDF figure.  For conversion of SVG -> PDF to work, the "kernel-figure"
directive, which is an extension for kernel documentation, should
be used instead.

The directive of "code:: raw" causes a warning from both
"make htmldocs" and "make pdfdocs", which reads:

    [...]/can/ctu/ctucanfd-driver.rst:75: WARNING: Pygments lexer name
    'raw' is not known

A plain literal-block marker should suffice where no syntax
highlighting is intended.

Fix the issues by using suitable directive and marker.

Fixes: c3a0addefbde ("docs: ctucanfd: CTU CAN FD open-source IP core documentation.")
Link: https://lore.kernel.org/all/[email protected]
Signed-off-by: Akira Yokosawa <[email protected]>
Acked-by: Pavel Pisa <[email protected]>
Cc: Martin Jerabek <[email protected]>
Cc: Ondrej Ille <[email protected]>
Cc: Marc Kleine-Budde <[email protected]>
Signed-off-by: Marc Kleine-Budde <[email protected]>

0 files changed, 0 insertions, 0 deletions