Use HTTPS instead of legacy HTTP for ansible.com (#16870)

Mechanical edit done by this "one-liner":

```Shell
git ls-files -z "$(git rev-parse --show-toplevel)" | xargs --null -I '{}' find '{}' -type f -print0 | xargs --null sed --in-place --regexp-extended 's#http://(www\.|galaxy\.|)ansible\.com#https://\1ansible.com#g;'
```

Related to: https://github.com/ansible/ansible/issues/16869

docs/docsite/rst/dev_guide/developing_inventory.rst

@@ -91,7 +91,7 @@ The data to be added to the top level JSON dictionary looks like this::
        How to develop modules
    :doc:`developing_plugins`
        How to develop plugins
-   `Ansible Tower <http://ansible.com/ansible-tower>`_
+   `Ansible Tower <https://ansible.com/ansible-tower>`_
        REST API endpoint and GUI for Ansible, syncs with dynamic inventory
    `Development Mailing List <http://groups.google.com/group/ansible-devel>`_
        Mailing list for development topics

docs/docsite/rst/dev_guide/developing_releases.rst

@@ -49,7 +49,7 @@ During the release candidate process, the focus will be on bugfixes that affect
        How to develop modules
    :doc:`developing_plugins`
        How to develop plugins
-   `Ansible Tower <http://ansible.com/ansible-tower>`_
+   `Ansible Tower <https://ansible.com/ansible-tower>`_
        REST API endpoint and GUI for Ansible, syncs with dynamic inventory
    `Development Mailing List <http://groups.google.com/group/ansible-devel>`_
        Mailing list for development topics