Fix typo

StackOverflow -> Stack Overflow

Author: changeworld

articles/azure-government/documentation-government-developer-guide.md

@@ -73,7 +73,7 @@ For more information about Azure Government, see the following resources:
 
 - [Sign up for a trial](https://azure.microsoft.com/global-infrastructure/government/request/?ReqType=Trial)
 - [Acquiring and accessing Azure Government](https://azure.microsoft.com/offers/azure-government/)
-- [Ask questions via the azure-gov tag in StackOverflow](https://stackoverflow.com/tags/azure-gov)
+- [Ask questions via the azure-gov tag in Stack Overflow](https://stackoverflow.com/tags/azure-gov)
 - [Azure Government blog](https://devblogs.microsoft.com/azuregov/)
 - [Azure Government overview](./documentation-government-welcome.md)
 - [Azure Government security](./documentation-government-plan-security.md)