Fix PowerShell Gallery Getting Started URL

Author: bmanikm

README.md

@@ -72,7 +72,7 @@ For detail descriptions and examples of the cmdlets, type
 You can also find the standalone installers for all the versions at [Downloads](https://github.com/Azure/azure-powershell/releases)
 
 ### PowerShell Gallery
-1. Install [Windows Management Framework 5 with PowerShellGet cmdlets](https://www.powershellgallery.com/GettingStarted?section=Get%20Started)
+1. Install [Windows Management Framework 5 with PowerShellGet cmdlets](https://msdn.microsoft.com/en-us/powershell/gallery/psgallery/psgallery_gettingstarted)
 2. In an elevated PowerShell session, run  ```Install-Module AzureRM```
 3. Run ```Install-AzureRm```
 4. To install RDFE cmdlets, run ```Install-Module Azure```