seg6: fix lenghts typo in a comment

Fix a typo:
lenghts -> length

The typo has been identified using codespell, and the tool currently
does not report any additional issues in comments.

Signed-off-by: Andrea Mayer <[e-mail]>
Reviewed-by: Simon Horman <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

net/ipv6/seg6_local.c

···
 static int seg6_chk_next_csid_cfg(__u8 block_len, __u8 func_len)
 {
 	/* Locator-Block and Locator-Node Function cannot exceed 128 bits
-	 * (i.e. C-SID container lenghts).
+	 * (i.e. C-SID container length).
 	 */
 	if (next_csid_chk_cntr_bits(block_len, func_len))
 		return -EINVAL;