Change CLI parameter singe quotes to double quotes

Changing the single quotes to double quotes around the parameter value of the CLI command to get RBAC role info. Single quotes produce an empty array in CLI but work in PS. Double quotes work in both CLI and PS.

Changing this: 
az role definition list --name 'Contributor'
to this:
az role definition list --name "Contributor"

Author: shanhix1

articles/governance/policy/how-to/remediate-resources.md

@@ -60,7 +60,7 @@ The **roleDefinitionIds** property uses the full resource identifier and doesn't
 following code:
 
 ```azurecli-interactive
-az role definition list --name 'Contributor'
+az role definition list --name "Contributor"
 ```
 
 ## Manually configure the managed identity