fs: ecryptfs: comment typo fix

Comment typo fix "vitual" -> "virtual".

Signed-off-by: Zipeng Zhang <zhangzipeng0@foxmail.com>
Link: https://lore.kernel.org/r/tencent_3EF4F3D0717E80F131BF00B982698C34DF07@qq.com
Signed-off-by: Tyler Hicks <code@tyhicks.com>
1 file changed