Fix Documentation build warnings

[Sascha Hauer]

There are so many warnings during build of the documentation
that one probably doesn't realize when he adds even more. Fix
all these.

Sascha

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Sascha Hauer (7):
      Documentation: arm-qemu-vexpress: Fix too short underline
      Documentation: Change many code blocks to no highlight
      Documentation: socfpga: Fix numbered list
      Documentation: change default highlight language to shell
      Documentation: defaultenv-2: Change highlight to make
      Documentation: remove :numbered: from lower level toctrees
      ARM: psci command: Add to misc group

 Documentation/boards/am335x.rst                    |  1 -
 Documentation/boards/arm-qemu-vexpress.rst         |  2 +-
 Documentation/boards/cirrus-logic.rst              |  1 -
 Documentation/boards/imx.rst                       |  1 -
 Documentation/boards/mips.rst                      |  1 -
 Documentation/boards/mvebu.rst                     |  1 -
 Documentation/boards/mxs.rst                       |  1 -
 Documentation/boards/openrisc.rst                  |  4 ++-
 Documentation/boards/powerpc.rst                   |  1 -
 Documentation/boards/pxa.rst                       |  1 -
 Documentation/boards/rk3288.rst                    |  1 -
 Documentation/boards/samsung.rst                   |  1 -
 Documentation/boards/socfpga.rst                   | 22 ++++++------
 Documentation/boards/x86.rst                       | 18 ++++++----
 Documentation/conf.py                              |  2 +-
 .../bindings/barebox/barebox,environment.rst       |  4 ++-
 .../devicetree/bindings/misc/fsl,imx-iim.rst       |  4 ++-
 .../devicetree/bindings/misc/fsl,imx-ocotp.rst     |  4 ++-
 Documentation/devicetree/index.rst                 |  1 -
 Documentation/filesystems/pstore.rst               | 40 +++++++++++++---------
 Documentation/user/defaultenv-2.rst                |  4 ++-
 Documentation/user/user-manual.rst                 |  1 -
 arch/arm/cpu/psci.c                                |  5 +--
 23 files changed, 66 insertions(+), 55 deletions(-)