Update ChangeLog.md

Author: cormacpayne

src/ResourceManager/TrafficManager/ChangeLog.md

@@ -18,7 +18,7 @@
         - Additional information about change #1
 -->
 ## Current Release
-* Update the parameters so that -ResourceGroupName parameter is required when using -Name parameter.
+* Update the parameters for `Get-AzureRmTrafficManagerProfile` so that -ResourceGroupName parameter is required when using -Name parameter.
 
 ## Version 4.0.4
 * Set minimum dependency of module to PowerShell 5.0