and GIT_SUBMODULE_STRATEGY as the suggested values are already used as
the default values, document instead in Design section (next commit)

service/static-shim.md

@@ -31,27 +31,20 @@ like this:
 ```
 variables:
   SITE_URL: example.torproject.org
-  SUBDIR: public/
 
 include:
   project: tpo/tpa/ci-templates
   file: static-shim-deploy.yml
 ```
 
-The `SITE_URL` and `SUBDIR` parameters need to be changed to reflect,
-respectively, the FQDN of the website as defined in the
-`static-components.yml` file, and the directory where the website was
-built by the previous build stage. You may also need
-`GIT_SUBMODULE_STRATEGY: recursive` if you have submodules (e.g. hugo
-themes are often shipped as submodules).
+The `SITE_URL` parameter must reflect the FQDN of the website as
+defined in the `static-components.yml` file.
 
 For example, for <https://status.torproject.org>, the `.gitlab-ci.yml`
 file looks like this (`build` stage elided for simplicity):
 
     variables:
-      GIT_SUBMODULE_STRATEGY: recursive
       SITE_URL: status.torproject.org
-      SUBDIR: public/
 
     include:
       project: tpo/tpa/ci-templates