Fixed document with meaningful grammer (SharePoint#7402)

Fixed document and added "to" in the statement.

Author: vijayysisodia

docs/apis/webhooks/sharepoint-webhooks-using-azure-functions.md

@@ -13,7 +13,7 @@ ms.localizationpriority: high
 
 ## Create an Azure Function App
 
-The first step you need to do is create an Azure Function App, which is a special Azure Web App focused on hosting Azure Functions.
+The first step you need to do is to create an Azure Function App, which is a special Azure Web App focused on hosting Azure Functions.
 
 1. Navigate to [https://portal.azure.com](https://portal.azure.com), search for **function app**.  Select **Function App** from the search results.