ext4: Fix comment typo "the the".

I have found double typed comments "the the". So i modified it to
one "the"

Signed-off-by: kyoungho koo <rnrudgh@gmail.com>
Link: https://lore.kernel.org/r/20200424171620.GA11943@koo-Z370-HD3
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

fs/ext4/inline.c

@@ -276,7 +276,7 @@ static int ext4_create_inline_data(handle_t *handle,
 		len = 0;
 	}
 
-	/* Insert the the xttr entry. */
+	/* Insert the xttr entry. */
 	i.value = value;
 	i.value_len = len;