Correct spelling problems as identified by codespell.
Fixes: 9e615dbba41e ("f2fs: add missing description for ipu_policy node")
Fixes: b2e4a2b300e5 ("f2fs: expose discard related parameters in sysfs")
Fixes: 846ae671ad36 ("f2fs: expose extension_list sysfs entry")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Cc: Chao Yu <chao@xxxxxxxxxx>
Cc: linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: Yangtao Li <frank.li@xxxxxxxx>
Cc: Konstantin Vyshetsky <vkon@xxxxxxxxxx>