docs: f2fs: wrap ASCII tables in literal blocks to fix LaTeX build

docs: f2fs: wrap ASCII tables in literal blocks to fix LaTeX build

Sphinx's LaTeX builder fails when converting the nested ASCII tables in
f2fs.rst, producing the following error:

  "Markup is unsupported in LaTeX: longtable does not support nesting a table."

Wrap the affected ASCII tables in literal code blocks to force Sphinx to
render them verbatim. This prevents nested longtables and fixes the PDF
build failure on Sphinx 8.2.x.

Acked-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Masaharu Noguchi <nogunix@gmail.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>