Change default branch name

.gitlab-ci.yml

@@ -62,5 +62,5 @@ release-docs:
     - echo "{\"auths\":{\"$CI_REGISTRY\":{\"username\":\"$CI_REGISTRY_USER\",\"password\":\"$CI_REGISTRY_PASSWORD\"}}}" > /kaniko/.docker/config.json
     - /kaniko/executor --context $CI_PROJECT_DIR --dockerfile $CI_PROJECT_DIR/Dockerfile --destination $CI_REGISTRY_IMAGE:${CI_COMMIT_TAG:-$CI_COMMIT_SHORT_SHA}-docs --destination $CI_REGISTRY_IMAGE:docs
   rules:
-    - if: "$CI_COMMIT_BRANCH == 'master'"
+    - if: "$CI_COMMIT_BRANCH == 'main'"
       when: on_success