fix verbiage in section

Author: asudbring

articles/load-balancer/load-balancer-outbound-connections.md

@@ -148,7 +148,7 @@ For UDP connections, the load balancer uses a **port-restricted cone NAT** algor
 
 A port is reused for an unlimited number of connections. The port is only reused if the destination IP or port is different.
 
-## Limitations
+## Constraints
 
 *	When a connection is idle with no new packets being sent, the ports will be released after 4 – 120 minutes.