Improve readability/use PS best practices

Author: jpsnover

src/ResourceManager/Resources/Commands.Resources/help/New-AzureRmManagedApplicationDefinition.md

@@ -26,7 +26,7 @@ The **New-AzureRmManagedApplicationDefinition** cmdlet creates a managed applica
 
 ### Example 1
 ```
-PS C:\> New-AzureRmManagedApplicationDefinition -Name myAppDef -ResourceGroupName myRG -DisplayName "test" -Description "sample description" -Location westus -LockLevel ReadOnly -PackageFileUri https://sample.blob.core.windows.net/files/myPackage.zip -Authorization <principalId:roleDefinitionId>
+PS> New-AzureRmManagedApplicationDefinition -Name myAppDef -ResourceGroupName myRG -DisplayName test -Description "sample description" -Location westus -LockLevel ReadOnly -PackageFileUri https://sample.blob.core.windows.net/files/myPackage.zip -Authorization <principalId:roleDefinitionId>
 ```
 
 This command creates a managed application definition