Merge pull request SharePoint#4080 from andrewconnell/docfix-issue4004

Grammatical typo fix

Author: andrewconnell

docs/sp-add-ins/sharepoint-add-ins.md

@@ -145,5 +145,5 @@ Ready to get started?
 
 ## See also
 
-- [Microsoft Virual Academy: Getting Started with SharePoint Add-Ins](https://mva.microsoft.com/en-US/training-courses/getting-started-with-sharepoint-addins-14053)
+- [Microsoft Virtual Academy: Getting Started with SharePoint Add-Ins](https://mva.microsoft.com/en-US/training-courses/getting-started-with-sharepoint-addins-14053)
 - [SharePoint glossary](../general-development/sharepoint-glossary.md)