Merge pull request #5261 from sam-cogan/patch-1

Correct mistake with PSRoleDefinitionObject  example

Author: maddieclayton

src/ResourceManager/Resources/Commands.Resources/help/Set-AzureRmRoleDefinition.md

@@ -58,7 +58,7 @@ PS C:\> $roleDef = Get-AzureRmRoleDefinition "Contoso On-Call"
           PS C:\> $roleDef.Description = "Can monitor all resources and start and restart virtual machines"
           PS C:\> $roleDef.AssignableScopes = @("/subscriptions/eb910d4f-edbf-429b-94F6-d76bae7ff401", "/subscriptions/a846d197-5eac-45c7-b885-a6227fe6d388")
 
-          PS C:\> New-AzureRmRoleDefinition -Role $roleDef
+          PS C:\> Set-AzureRmRoleDefinition -Role $roleDef
 ```
 
 ### --------------------------  Create using JSON file  --------------------------