Update exchange.md

Typo fix in URL

Author: chrisda

exchange/exchange-ps/exchange/exchange.md

@@ -10,7 +10,7 @@ Locale: en-US
 
 Exchange PowerShell is built on Windows PowerShell technology and provides a powerful command-line interface that enables automation of administrative tasks. The following PowerShell environments are available in Exchange:
 
-- [Exchange Server PowerShell (Exchange Management Shell)](https://docs.microsoft.com/powershell/exchange/exchange-server/exchange-management-shel)
+- [Exchange Server PowerShell (Exchange Management Shell)](https://docs.microsoft.com/powershell/exchange/exchange-server/exchange-management-shell)
 
 - [Exchange Online PowerShell](https://docs.microsoft.com/powershell/exchange/exchange-online/exchange-online-powershell)