misc: change `poolname` to `name` in example.conf.

example.conf

@@ -1,27 +1,27 @@
 {
 "pools" : [
 	{
-		"poolname" : "Preferred Pool",
+		"name" : "Preferred Pool",
 		"url" : "http://url1:8332",
 		"user" : "user1",
 		"pass" : "pass1"
 	},
 	{
-		"poolname" : "Failover Pool",
+		"name" : "Failover Pool",
 		"url" : "http://url2:8344",
 		"user" : "user2",
 		"pass" : "pass2",
 		"state" : "enabled"
 	},
 	{
-		"poolname" : "Failover Pool",
+		"name" : "Failover Pool",
 		"url" : "http://url3:8344",
 		"user" : "user3",
 		"pass" : "pass3",
 		"state" : "disabled"
 	},
 	{
-		"poolname" : "Testing Pool",
+		"name" : "Testing Pool",
 		"url" : "http://url4:8332",
 		"user" : "user4",
 		"pass" : "pass4",