Update link to Django -> Citus multitenant migration

Author: seesharprun

articles/cosmos-db/postgresql/concepts-performance-tuning.md

@@ -136,7 +136,7 @@ mind there are helper libraries for several popular application frameworks that
 make it easier. Here are instructions:
 
 * [Ruby on Rails](https://docs.citusdata.com/en/stable/develop/migration_mt_ror.html),
-* [Django](https://docs.citusdata.com/en/stable/develop/migration_mt_django.html),
+* [Django](https://django-multitenant.readthedocs.io/en/latest/migration_mt_django.html),
 * [ASP.NET](https://docs.citusdata.com/en/stable/develop/migration_mt_asp.html),
 * [Java Hibernate](https://www.citusdata.com/blog/2018/02/13/using-hibernate-and-spring-to-build-multitenant-java-apps/).
 

articles/cosmos-db/postgresql/quickstart-build-scalable-apps-model-multi-tenant.md

@@ -124,7 +124,7 @@ There are helper libraries for several popular application frameworks that make
 it easy to include a tenant ID in queries. Here are instructions:
 
 * [Ruby on Rails instructions](https://docs.citusdata.com/en/stable/develop/migration_mt_ror.html)
-* [Django instructions](https://docs.citusdata.com/en/stable/develop/migration_mt_django.html)
+* [Django instructions](https://django-multitenant.readthedocs.io/en/latest/migration_mt_django.html)
 * [ASP.NET](https://docs.citusdata.com/en/stable/develop/migration_mt_asp.html)
 * [Java Hibernate](https://www.citusdata.com/blog/2018/02/13/using-hibernate-and-spring-to-build-multitenant-java-apps/)