Docs: Update the example for YAML template API

Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

doc/api/templates/gitlab_ci_ymls.md

@@ -135,7 +135,7 @@ Example response:
 ```json
 {
   "name": "Ruby",
-  "content": "# This file is a template, and might need editing before it works on your project.\n# Official language image. Look for the different tagged releases at:\n# https://hub.docker.com/r/library/ruby/tags/\nimage: \"ruby:2.5\"\n\n# Pick zero or more services to be used on all builds.\n# Only needed when using a docker container to run your tests in.\n# Check out: http://docs.gitlab.com/ee/ci/services/index.html\n  - mysql:latest\n  - redis:latest\n  - postgres:latest\n\nvariables:\n  POSTGRES_DB: database_name\n\n# Cache gems in between builds\ncache:\n  paths:\n    - vendor/ruby\n\n# This is a basic example for a gem or script which doesn't use\n# services such as redis or postgres\nbefore_script:\n  - ruby -v  # Print out ruby version for debugging\n  # Uncomment next line if your rails app needs a JS runtime:\n  # - apt-get update -q && apt-get install nodejs -yqq\n  - bundle install -j $(nproc) --path vendor  # Install dependencies into ./vendor/ruby\n\n# Optional - Delete if not using `rubocop`\nrubocop:\n  script:\n    - rubocop\n\nrspec:\n  script:\n    - rspec spec\n\nrails:\n  variables:\n    DATABASE_URL: \"postgresql://postgres:postgres@postgres:5432/$POSTGRES_DB\"\n  script:\n    - rails db:migrate\n    - rails db:seed\n    - rails test\n\n# This deploy job uses a simple deploy flow to Heroku, other providers, e.g. AWS Elastic Beanstalk\n# are supported too: https://github.com/travis-ci/dpl\ndeploy:\n  type: deploy\n  environment: production\n  script:\n    - gem install dpl\n    - dpl --provider=heroku --app=$HEROKU_APP_NAME --api-key=$HEROKU_PRODUCTION_KEY\n"
+  "content": "# This file is a template, and might need editing before it works on your project.\n# To contribute improvements to CI/CD templates, please follow the Development guide at:\n# https://docs.gitlab.com/ee/development/cicd/templates.html\n# This specific template is located at:\n# https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Ruby.gitlab-ci.yml\n\n# Official language image. Look for the different tagged releases at:\n# https://hub.docker.com/r/library/ruby/tags/\nimage: ruby:latest\n\n# Pick zero or more services to be used on all builds.\n# Only needed when using a docker container to run your tests in.\n# Check out: http://docs.gitlab.com/ee/ci/docker/using_docker_images.html#what-is-a-service\nservices:\n  - mysql:latest\n  - redis:latest\n  - postgres:latest\n\nvariables:\n  POSTGRES_DB: database_name\n\n# Cache gems in between builds\ncache:\n  paths:\n    - vendor/ruby\n\n# This is a basic example for a gem or script which doesn't use\n# services such as redis or postgres\nbefore_script:\n  - ruby -v  # Print out ruby version for debugging\n  # Uncomment next line if your rails app needs a JS runtime:\n  # - apt-get update -q && apt-get install nodejs -yqq\n  - bundle config set path 'vendor'  # Install dependencies into ./vendor/ruby\n  - bundle install -j $(nproc)\n\n# Optional - Delete if not using `rubocop`\nrubocop:\n  script:\n    - rubocop\n\nrspec:\n  script:\n    - rspec spec\n\nrails:\n  variables:\n    DATABASE_URL: \"postgresql://postgres:postgres@postgres:5432/$POSTGRES_DB\"\n  script:\n    - rails db:migrate\n    - rails db:seed\n    - rails test\n\n# This deploy job uses a simple deploy flow to Heroku, other providers, e.g. AWS Elastic Beanstalk\n# are supported too: https://github.com/travis-ci/dpl\ndeploy:\n  stage: deploy\n  environment: production\n  script:\n    - gem install dpl\n    - dpl --provider=heroku --app=$HEROKU_APP_NAME --api-key=$HEROKU_PRODUCTION_KEY\n"
 }
 ```