fix wording on tests

Signed-off-by: cinereal <cinereal@riseup.net>

architecture-docs/architecture.md

@@ -189,11 +189,11 @@ Tests created so far cover:
   - Peertube
   - Pixelfed
 - builds for test machines covering our applications and ancilliary services (Garage)
-- deployments of the above applications using:
-  - NixOps4 through Nix
-  - NixOps4 through CLI
-  - NixOps4 through our front-end
 - provisioning virtual machines on ProxmoX
+- deployment tests:
+  - by NixOps4 through Nix, deploying dummy programs `hello` and `cowsay`
+  - by NixOps4's command-line interface, deploying our applications Mastodon, Peertube and Pixelfed
+  - a similar test except with the deployment triggered through interaction with our web front-end, as an operator would deploy them using Fediversity
 - deployments using our data model by:
   - SSH
   - NixOps4
@@ -202,7 +202,7 @@ Tests created so far cover:
 - builds for the (virtual) machines making up our internal infrastructure
 - ensuring any checks exposed by our Nix flake have been exposed in CI
 
-An illustration demonstrating the set-up of our deployment tests covering our applications is shown below:
+An illustration demonstrating the set-up of our test deploying our applications is shown below:
 
 ![](./test-setup.png){ width=100% }