Typo realay->relay.

Change-Id: Ice6f962404d61d7e8d1ed749f3abd06943804756

Author: Juha Heiskanen

source/libDHCPv6/dhcp_service_api.c

@@ -609,21 +609,21 @@ uint16_t dhcp_service_init(int8_t interface_id, dhcp_instance_type_e instance_ty
 
 void dhcp_service_relay_instance_enable(uint16_t instance, uint8_t *server_address)
 {
-    relay_instance_t *realay_srv = dhcp_service_relay_find(instance);
-    if (realay_srv) {
-        realay_srv->relay_activated = true;
-        memcpy(realay_srv->server_address, server_address, 16);
+    relay_instance_t *relay_srv = dhcp_service_relay_find(instance);
+    if (relay_srv) {
+        relay_srv->relay_activated = true;
+        memcpy(relay_srv->server_address, server_address, 16);
     }
 }
 
 uint8_t *dhcp_service_relay_global_addres_get(uint16_t instance)
 {
-    relay_instance_t *realay_srv = dhcp_service_relay_find(instance);
-    if (!realay_srv || !realay_srv->relay_activated) {
+    relay_instance_t *relay_srv = dhcp_service_relay_find(instance);
+    if (!relay_srv || !relay_srv->relay_activated) {
         return NULL;
     }
 
-    return realay_srv->server_address;
+    return relay_srv->server_address;
 }
 
 void dhcp_service_delete(uint16_t instance)