docs: use variabilized GitLab server FQDN in CI/CD component reference URLs

README.md

@@ -16,7 +16,7 @@ Add the following to your `.gitlab-ci.yml`:
 ```yaml
 include:
   # 1: include the component
-  - component: gitlab.com/to-be-continuous/node/gitlab-ci-node@4.0.0
+  - component: $CI_SERVER_FQDN/to-be-continuous/node/gitlab-ci-node@4.0.0
     # 2: set/override component inputs
     inputs:
       image: "registry.hub.docker.com/library/node:20" # ⚠ this is only an example
@@ -491,9 +491,9 @@ With:
 ```yaml
 include:
   # main template
-  - component: gitlab.com/to-be-continuous/node/gitlab-ci-node@4.0.0
+  - component: $CI_SERVER_FQDN/to-be-continuous/node/gitlab-ci-node@4.0.0
   # Vault variant
-  - component: gitlab.com/to-be-continuous/node/gitlab-ci-node-vault@4.0.0
+  - component: $CI_SERVER_FQDN/to-be-continuous/node/gitlab-ci-node-vault@4.0.0
     inputs:
       # audience claim for JWT
       vault-oidc-aud: "https://vault.acme.host"