fix static analysis

Author: isra-fel

src/Accounts/Accounts/help/Get-AzAccessToken.md

@@ -1,7 +1,7 @@
 ---
 external help file: Microsoft.Azure.PowerShell.Cmdlets.Accounts.dll-Help.xml
 Module Name: Az.Accounts
-online version:
+online version: https://docs.microsoft.com/en-us/powershell/module/az.accounts/get-azaccesstoken
 schema: 2.0.0
 ---