docs: *.local.edly.io -> *.local.openedx.io

The default URL to run a local platform switched from local.edly.io to
local.openedx.io. This changes makes it clearer for everyone that Tutor
is to run Open edX.

See: overhangio/tutor#1120

README.rst

@@ -95,17 +95,17 @@ Operations
 Creating a user
 ~~~~~~~~~~~~~~~
 
-The ecommerce user interface will be available at http://ecommerce.local.edly.io for a local instance, and at ``ECOMMERCE_HOST`` (by  default: ``http(s)://ecommerce.<yours lms host>``) in production. In order to run commands from the UI, a user with admin rights must be created. There are two ways to proceed. To create a brand new user in E-Commerce which will not exist in the LMS, run::
+The ecommerce user interface will be available at http://ecommerce.local.openedx.io for a local instance, and at ``ECOMMERCE_HOST`` (by  default: ``http(s)://ecommerce.<yours lms host>``) in production. In order to run commands from the UI, a user with admin rights must be created. There are two ways to proceed. To create a brand new user in E-Commerce which will not exist in the LMS, run::
 
   tutor local run ecommerce ./manage.py createsuperuser
 
-Then login with this new user at: http://ecommerce.local.edly.io/admin/
+Then login with this new user at: http://ecommerce.local.openedx.io/admin/
 
-To re-use an existing LMS user, first go to http://ecommerce.local.edly.io/login. You should be redirected to the LMS login page, then to the dashboard. Then this user must be made a staff/superuser in E-Commerce::
+To re-use an existing LMS user, first go to http://ecommerce.local.openedx.io/login. You should be redirected to the LMS login page, then to the dashboard. Then this user must be made a staff/superuser in E-Commerce::
 
     tutor local run ecommerce ./manage.py shell -c "from django.contrib.auth import get_user_model; get_user_model().objects.filter(email='[email protected]').update(is_staff=True, is_superuser=True)"
 
-Make sure to replace ``[email protected]`` by the actual user email address. You should then be able to view the Oscar dashboard at http://ecommerce.local.edly.io.
+Make sure to replace ``[email protected]`` by the actual user email address. You should then be able to view the Oscar dashboard at http://ecommerce.local.openedx.io.
 
 
 Custom payment processors
@@ -130,7 +130,7 @@ Then, build the image, pointing to your fork if necessary::
 Development
 ~~~~~~~~~~~
 
-When running Tutor in development mode, the ecommerce service is accessible at http://ecommerce.local.edly.io:8130.
+When running Tutor in development mode, the ecommerce service is accessible at http://ecommerce.local.openedx.io:8130.
 
 To mount a local ecommerce repository in the ecommerce container, add an auto-mounted repository with::