Fix link and include missing doc in index

contribute.rst

@@ -30,5 +30,5 @@ footer of every page.
 For this documentation we use Sphinx and reStructuredText (reST), which is the default plain text markup language used by Sphinx.
 Here are some useful resources on reStructuredText:
 
-- `Sphinx reStructuredText Primer <https://tinyurl.com/rstprimer>`_
+- `Sphinx reStructuredText Primer <https://www.sphinx-doc.org/en/master/usage/restructuredtext/basics.html>`_
 - `reStructuredText style guide <https://canonical-documentation-with-sphinx-and-readthedocscom.readthedocs-hosted.com/style-guide/>`_ 

how-to/add_controller.rst

@@ -72,7 +72,7 @@ Deploy controller
 
     ``juju switch controller``
 
-5. Download the controller bundle from `here <https://drive.google.com/file/d/17GHATHXGg2GuIeIWGr0FvkguMRdv5vnH/view?usp=sharing>`_.
+5. Download the controller bundle from `here <https://drive.google.com/file/d/17GHATHXGg2GuIeIWGr0FvkguMRdv5vnH/view?usp=sharing>`__.
 
 6. Extract the file: 
 
@@ -90,7 +90,7 @@ Deploy controller
 
     ``juju status  --format json | jq '.applications.haproxy.units["haproxy/0"]["public-address"]'``
 
-10.  Go to the `Route 53 dashboard <https://us-east-1.console.aws.amazon.com/route53/v2/home>`_.
+10.  Go to the `Route 53 dashboard <https://us-east-1.console.aws.amazon.com/route53/v2/home>`__.
 
 11.  Add an A record for the deployed controller and the DNS name specified in step 1 with the IP obtained in step 9.
 

how-to/index.rst

@@ -41,6 +41,7 @@ After JIMM has been deployed, you need to configure it with your Juju-operated c
    :maxdepth: 1
 
    Add controller <add_controller>
+   Add controller without DNS <add_controller_no_dns>
    Set up Route53 <route53>
 
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