Merged PR 479922: Billing/Marketplace updates

Add FAQ on monthly vs. daily billing
Replace some Marketplace links with links to billing articles
Replaced Elijah with myself for all Integrate topics

Related work items: #1561115

Author: Chrystal Comley

docs/integrate/concepts/cross-origin-resource-sharing.md

@@ -7,8 +7,8 @@ ms.technology: devops-ecosystem
 ms.topic: conceptual
 ms.manager: jillfra
 monikerRange: '>= tfs-2013'
-ms.author: elbatk
-author: elbatk
+ms.author: chcomley
+author: chcomley
 ms.date: 08/04/2016
 ---
 

docs/integrate/concepts/dotnet-client-libraries.md

@@ -7,8 +7,8 @@ ms.technology: devops-ecosystem
 ms.topic: conceptual
 ms.manager: jillfra
 monikerRange: '>= tfs-2013'
-ms.author: elbatk
-author: elbatk
+ms.author: chcomley
+author: chcomley
 ms.date: 05/17/2019
 ---