[Website] Add Auth0 provider links

website/docs/providers/index.html.markdown

@@ -28,6 +28,7 @@ down to see all providers.
 - [Alibaba Cloud](/docs/providers/alicloud/index.html)
 - [Archive](/docs/providers/archive/index.html)
 - [Arukas](/docs/providers/arukas/index.html)
+- [Auth0](/docs/providers/auth0/index.html)
 - [Avi Vantage](/docs/providers/avi/index.html)
 - [Aviatrix](/docs/providers/aviatrix/index.html)
 - [AWS](/docs/providers/aws/index.html)

website/docs/providers/type/monitor-index.html.markdown

@@ -19,6 +19,7 @@ HashiCorp, and are tested by HashiCorp.
 ---
 
 
+- [Auth0](/docs/providers/auth0/index.html)
 - [Circonus](/docs/providers/circonus/index.html)
 - [Datadog](/docs/providers/datadog/index.html)
 - [Dyn](/docs/providers/dyn/index.html)