trivial: fix then -> than typos in comments and documentation

- (better, more, bigger ...) then -> (...) than

Signed-off-by: Frederik Schwarzer <schwarzerf@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 36f6cc7..be846d6 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -1348,7 +1348,7 @@
 {
 	int			ronly = (mp->m_flags & XFS_MOUNT_RDONLY);
 
-	/* Fail a mount where the logbuf is smaller then the log stripe */
+	/* Fail a mount where the logbuf is smaller than the log stripe */
 	if (xfs_sb_version_haslogv2(&mp->m_sb)) {
 		if (mp->m_logbsize <= 0 &&
 		    mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) {