mke2fs.8.in: add missing "big" and "huge" usage-type description

The commit 493024ea1d74e4cb48aac3a24111f5c8da343e9f ("mke2fs: Fix up the
fs type and feature selection for 64-bit blocks") added 'big' and 'huge'
usage-type but was missing description in man page. Add it.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
1 file changed