Documentation: qat: fix auto_reset section

Documentation: qat: fix auto_reset section

Remove unneeded colon in the auto_reset section.

This resolves the following errors when building the documentation:

    Documentation/ABI/testing/sysfs-driver-qat:146: ERROR: Unexpected indentation.
    Documentation/ABI/testing/sysfs-driver-qat:146: WARNING: Block quote ends without a blank line; unexpected unindent.

Fixes: f5419a4239af ("crypto: qat - add auto reset on error")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Closes: https://lore.kernel.org/linux-kernel/20240212144830.70495d07@canb.auug.org.au/T/
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>