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/sonar/gitlab-ci-sonar@4.2.3
+  - component: $CI_SERVER_FQDN/to-be-continuous/sonar/gitlab-ci-sonar@4.2.3
     # 2: set/override component inputs
     inputs:
       host-url: https://sonarqube.acme.host # ⚠ this is only an example
@@ -115,9 +115,9 @@ With:
 ```yaml
 include:
   # main template
-  - component: gitlab.com/to-be-continuous/sonar/gitlab-ci-sonar@4.2.3
+  - component: $CI_SERVER_FQDN/to-be-continuous/sonar/gitlab-ci-sonar@4.2.3
   # Vault variant
-  - component: gitlab.com/to-be-continuous/sonar/gitlab-ci-sonar-vault@4.2.3
+  - component: $CI_SERVER_FQDN/to-be-continuous/sonar/gitlab-ci-sonar-vault@4.2.3
     inputs:
        # audience claim for JWT
       vault-oidc-aud: "https://vault.acme.host"