*: add comment about APPLET_ODDNAME format

It confused me more than once

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/util-linux/mkfs_ext2.c b/util-linux/mkfs_ext2.c
index 5816a20..4a7a878 100644
--- a/util-linux/mkfs_ext2.c
+++ b/util-linux/mkfs_ext2.c
@@ -21,7 +21,8 @@
 //config:	help
 //config:	  Alias to "mke2fs".
 
-//applet:IF_MKE2FS(APPLET_ODDNAME(mke2fs, mkfs_ext2, BB_DIR_SBIN, BB_SUID_DROP, mkfs_ext2))
+//                    APPLET_ODDNAME:name       main       location     suid_type     help
+//applet:IF_MKE2FS(   APPLET_ODDNAME(mke2fs,    mkfs_ext2, BB_DIR_SBIN, BB_SUID_DROP, mkfs_ext2))
 //applet:IF_MKFS_EXT2(APPLET_ODDNAME(mkfs.ext2, mkfs_ext2, BB_DIR_SBIN, BB_SUID_DROP, mkfs_ext2))
 ////////:IF_MKFS_EXT3(APPLET_ODDNAME(mkfs.ext3, mkfs_ext2, BB_DIR_SBIN, BB_SUID_DROP, mkfs_ext2))