ipv4: udp: fix typos in comments

Correct typos in ipv4/udp.c comments for clarity:
"Encapulation" -> "Encapsulation"
"measureable" -> "measurable"
"tacking care" -> "taking care"

No functional changes.

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

net/ipv4/udp.c

···
  *	YOSHIFUJI Hideaki @USAGI and:	Support IPV6_V6ONLY socket option, which
  *	Alexey Kuznetsov:		allow both IPv4 and IPv6 sockets to bind
  *					a single port at the same time.
- *	Derek Atkins <[e-mail]>: Add Encapulation Support
+ *	Derek Atkins <[e-mail]>: Add Encapsulation Support
  *	James Chapman		:	Add L2TP encapsulation type.
  */
 
···
 
 			/* compute_score is too long of a function to be
 			 * inlined, and calling it again here yields
-			 * measureable overhead for some
+			 * measurable overhead for some
 			 * workloads. Work around it by jumping
 			 * backwards to rescore 'result'.
 			 */
···
 	return 0;
 }
 
-/* wrapper for udp_queue_rcv_skb tacking care of csum conversion and
+/* wrapper for udp_queue_rcv_skb taking care of csum conversion and
  * return code conversion for ip layer consumption
  */
 static int udp_unicast_rcv_skb(struct sock *sk, struct sk_buff *skb,