fix https://github.com/Neilpang/acme.sh/pull/1979

dnsapi/dns_linode_v4.sh

@@ -8,7 +8,7 @@ LINODE_V4_API_URL="https://api.linode.com/v4/domains"
 ########  Public functions #####################
 
 #Usage: dns_linode_add   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
-dns_linode_add() {
+dns_linode_v4_add() {
   fulldomain="${1}"
   txtvalue="${2}"
 
@@ -51,7 +51,7 @@ dns_linode_add() {
 }
 
 #Usage: dns_linode_rm   _acme-challenge.www.domain.com
-dns_linode_rm() {
+dns_linode_v4_rm() {
   fulldomain="${1}"
 
   if ! _Linode_API; then