ext4: Fix misspellings using 'codespell' tool

Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 3c7d288..680bb33 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -33,7 +33,7 @@
 
 /**
  * Check if the given dir-inode refers to an htree-indexed directory
- * (or a directory which chould potentially get coverted to use htree
+ * (or a directory which could potentially get converted to use htree
  * indexing).
  *
  * Return 1 if it is a dx dir, 0 if not