Btrfs: Spelling fix in btrfs_lookup_first_block_group comments

Signed-off-by: Sankar P <sankar.curiosity@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index e496644..3e2c7c7 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -312,7 +312,7 @@
 }
 
 /*
- * return the block group that contains teh given bytenr
+ * return the block group that contains the given bytenr
  */
 struct btrfs_block_group_cache *btrfs_lookup_block_group(
 						 struct btrfs_fs_info *info,