Update Quickbooks to QuickBooks

Docs update for #10265

Author: Andy

docs/integrations/sources/quickbooks.md

@@ -1,10 +1,10 @@
-# Quickbooks
+# QuickBooks
 
 ## Overview
 
-The Quickbooks source supports both Full Refresh and Incremental syncs. You can choose if this connector will copy only the new or updated data, or all rows in the tables and columns you set up for replication, every time a sync is run.
+The QuickBooks source supports both Full Refresh and Incremental syncs. You can choose if this connector will copy only the new or updated data, or all rows in the tables and columns you set up for replication, every time a sync is run.
 
-This source wraps the [Singer Quickbooks Tap](https://github.com/singer-io/tap-quickbooks).
+This source wraps the [Singer QuickBooks Tap](https://github.com/singer-io/tap-quickbooks).
 
 ### Output schema
 
@@ -70,7 +70,7 @@ This Source is capable of syncing the following [Streams](https://developer.intu
 * Realm ID
 * Refresh token
 
-The easiest way to get these credentials is by using Quickbook's [OAuth 2.0 playground](https://developer.intuit.com/app/developer/qbo/docs/develop/authentication-and-authorization/oauth-2.0-playground)
+The easiest way to get these credentials is by using QuickBook's [OAuth 2.0 playground](https://developer.intuit.com/app/developer/qbo/docs/develop/authentication-and-authorization/oauth-2.0-playground)
 
 **Important note:** The refresh token expires every 100 days. You will need to manually revisit the Oauth playground to obtain a refresh token every 100 days, or your syncs will expire. We plan on offering full Oauth support soon so you don't need to redo this process manually.