ext4: aligned '*' in comments

The '*' in the comment is not aligned.

Signed-off-by: Jiang Jian <jiangjian@cdjrlc.com>
Link: https://lore.kernel.org/r/20220621061531.19669-1-jiangjian@cdjrlc.com


Signed-off-by: Theodore Ts'o <tytso@mit.edu>