Grammar correction (Azure#15535)

Added '.' to lines 116 and 270. Brings in line with grammar for https://github.com/Azure/azure-powershell/blob/main/src/Network/Network/help/Add-AzNetworkSecurityRuleConfig.md line 275

Author: benjaminsmorgan

src/Network/Network/help/Set-AzNetworkSecurityRuleConfig.md

@@ -113,7 +113,7 @@ Specifies a destination address prefix.
 The acceptable values for this parameter are:
 - A Classless Interdomain Routing (CIDR) address 
 - A destination IP address range 
-- A wildcard character (*) to match any IP address
+- A wildcard character (*) to match any IP address.
 You can use tags such as VirtualNetwork, AzureLoadBalancer, and Internet.
 
 ```yaml
@@ -267,7 +267,7 @@ Specifies a source address prefix.
 The acceptable values for this parameter are:
 - A CIDR
 - A source IP range
-- A wildcard character (*) to match any IP address
+- A wildcard character (*) to match any IP address.
 You can also use tags such as VirtualNetwork, AzureLoadBalancer and Internet.
 
 ```yaml