befs: fix function name in documentation

Documentation of function befs_load_cb() lists it as load_befs_sb().  Fix
the misnomer.

Link: http://lkml.kernel.org/r/1465700235-22881-2-git-send-email-luisbg@osg.samsung.com
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

fs/befs/super.c

@@ -14,7 +14,7 @@
 #include "super.h"
 
 /**
- * load_befs_sb -- Read from disk and properly byteswap all the fields
+ * befs_load_sb -- Read from disk and properly byteswap all the fields
  * of the befs superblock
  *
  *