fs/: Spelling fixes

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
diff --git a/fs/befs/btree.c b/fs/befs/btree.c
index af5bb93..4202db7 100644
--- a/fs/befs/btree.c
+++ b/fs/befs/btree.c
@@ -232,7 +232,7 @@
  * @key: Key string to lookup in btree
  * @value: Value stored with @key
  *
- * On sucess, returns BEFS_OK and sets *@value to the value stored
+ * On success, returns BEFS_OK and sets *@value to the value stored
  * with @key (usually the disk block number of an inode).
  *
  * On failure, returns BEFS_ERR or BEFS_BT_NOT_FOUND.