chore: fix port, remove port on doc URLs

[VinneyJ]

1. change port from 8082 to 80
2. changed domain from mediacloud.org to civicsignal.africa and removed 8082 port from in docs URLs,

Fixes #2

[DavidTheProgrammer]

LGTM aside from the typos

[thepsalmist]

LGTM

[kilemensi]

👍🏽 .. don't have full context so if @thepsalmist is happy with it, please proceed to merge

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1. Why is the API backend called app? Shouldn't it be api.civicsignal.africa instead of app.civicsignal.africa? app.hostname is usually a frontend/UI app e.g. https://app.gitbook.com, https://app.sendgrid.com/, etc.
2. Lets fix or remove the GitHub actions (Not in this PR)

[thepsalmist]

👍🏽 .. don't have full context so if @thepsalmist is happy with it, please proceed to merge

1. Why is the API backend called app? Shouldn't it be api.civicsignal.africa instead of app.civicsignal.africa? app.hostname is usually a frontend/UI app e.g. https://app.gitbook.com, https://app.sendgrid.com/, etc.
2. Lets fix or remove the GitHub actions (Not in this PR)

I'm happy with making the domain changes to reflect this is an api and not app and make corresponding changes to the frontend applications

[VinneyJ]

Cool on it.

[DavidTheProgrammer]

LGTM