Update New-AzDeployment.md

fixed typo on Powershell CMDlet

Author: cobeyerrett

src/Resources/Resources/help/New-AzDeployment.md

@@ -132,7 +132,7 @@ It uses the *TemplateVersion* parameter to specify the version of the template.
 ```
 PS C:\> $TemplateFileText = [System.IO.File]::ReadAllText("D:\Azure\Templates\EngineeringSite.json")
 PS C:\> $TemplateObject = ConvertFrom-Json $TemplateFileText -AsHashtable
-PS C:\> New-AzDeploymeny -Location "West US" -TemplateObject $TemplateObject -TemplateParameterFile "D:\Azure\Templates\EngSiteParams.json" -TemplateVersion "2.1"
+PS C:\> New-AzDeployment -Location "West US" -TemplateObject $TemplateObject -TemplateParameterFile "D:\Azure\Templates\EngSiteParams.json" -TemplateVersion "2.1"
 ```
 
 This command creates a new deployment at the current subscription scope by using a custom template and a template file on disk that has been converted to an in-memory hashtable.