fixed api url

.gitlab/ci/build_docker_images.yml

@@ -18,7 +18,7 @@ cleanup_composer_image:
   stage: build_docker_images
   image: curlimages/curl
   script:
-    - 'curl -X DELETE --fail -H "JOB-TOKEN: $CI_JOB_TOKEN" "$CI_API_V4_URL/api/v4/projects/$CI_PROJECT_ID/registry/repositories/418/tags/${CI_REGISTRY_IMAGE}/$DOCKER_FPM_IMAGE_NAME:$DOCKER_COMPOSER_IMAGE_TAG"'
+    - 'curl -X DELETE --fail -H "JOB-TOKEN: $CI_JOB_TOKEN" "$CI_API_V4_URL/projects/$CI_PROJECT_ID/registry/repositories/418/tags/${CI_REGISTRY_IMAGE}/$DOCKER_FPM_IMAGE_NAME:$DOCKER_COMPOSER_IMAGE_TAG"'
 
 nginx:
   stage: build_docker_images