Added links to SUMMARY.md files

Author: mattbrailsford

commerce-add-ons/packages/SUMMARY.md

@@ -7,6 +7,7 @@
 * [Umbraco Commerce](https://docs.umbraco.com/umbraco-commerce/)
 * [Commerce Payment Providers](https://docs.umbraco.com/umbraco-commerce-payment-providers)
 * [Commerce Shipping Providers](https://docs.umbraco.com/umbraco-commerce-shipping-providers)
+* [Commerce Sales Tax Providers](https://docs.umbraco.com/umbraco-commerce-sales-tax-providers)
 
 ## Cart
 

commerce-add-ons/payment-providers/SUMMARY.md

@@ -8,6 +8,7 @@
 * [Umbraco Commerce](https://docs.umbraco.com/umbraco-commerce/)
 * [Commerce Packages](https://docs.umbraco.com/umbraco-commerce-packages)
 * [Commerce Shipping Providers](https://docs.umbraco.com/umbraco-commerce-shipping-providers)
+* [Commerce Sales Tax Providers](https://docs.umbraco.com/umbraco-commerce-sales-tax-providers)
 
 ## Invoicing
 

commerce-add-ons/sales-tax-providers/README.md

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+---
+description: >-
+  Learn more about each of the available integrations for implementing sales tax providers into your Umbraco Commerce installation.
+---
+
+# What are Sales Tax Providers?
+
+Sales tax providers are essential for your Umbraco Commerce installation when you need to calculate the sales tax of an order dynamically, such as in the US.
+
+Sales tax providers are installed individually with the following HQ supported providers available.
+
+## Available integrations
+
+<table data-view="cards"><thead><tr><th align="center"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody>
+<tr><td align="center"><strong>TaxJar</strong></td><td><a href="taxjar/">taxjar</a></td></tr>
+</tbody></table>
+
+## Using These Docs
+
+**These docs are aimed at developers and users** who have at least a basic understanding of [Umbraco](https://umbraco.com), as well as Umbraco backoffice principles.

commerce-add-ons/sales-tax-providers/SUMMARY.md

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+# Table of contents
+
+* [What are Sales Tax Providers?](README.md)
+* [Install Sales Tax Provider](install-sales-tax-providers.md)
+
+## Commerce Products
+
+* [Umbraco Commerce](https://docs.umbraco.com/umbraco-commerce/)
+* [Commerce Packages](https://docs.umbraco.com/umbraco-commerce-packages)
+* [Commerce Payment Providers](https://docs.umbraco.com/umbraco-commerce-payment-providers)
+* [Commerce Shipping Providers](https://docs.umbraco.com/umbraco-commerce-shiping-providers)
+
+## TaxJar
+
+* [Overview](taxjar/README.md)
+* [Configure TaxJar](taxjar/configuring-taxjar.md)
+* [Configure Umbraco](taxjar/configuring-umbraco.md)
+* [Release Notes](taxjar/release-notes.md)

commerce-add-ons/shipping-providers/SUMMARY.md

@@ -8,6 +8,7 @@
 * [Umbraco Commerce](https://docs.umbraco.com/umbraco-commerce/)
 * [Commerce Packages](https://docs.umbraco.com/umbraco-commerce-packages)
 * [Commerce Payment Providers](https://docs.umbraco.com/umbraco-commerce-payment-providers)
+* [Commerce Sales Tax Providers](https://docs.umbraco.com/umbraco-commerce-sales-tax-providers)
 
 ## DHL