【CircleCI】extraneous key [command] is not permittedが出てbuildできない

circleciにてテストとデプロイを行っていたのですが、**extraneous key [command] is not permitted**というエラーに遭遇しました。

元のコード

```..circleci/config.yml
version: 2.1
executors:
  default:
    docker:
      - image: circleci/ruby:2.5-node-browsers
      - image: circleci/mysql:5.6


    environment:
      - MYSQL_ALLOW_EMPTY_PASSWORD: 'true'
      - MYSQL_ROOT_HOST: '%'
      - RAILS_ENV: 'test'
      - BUNDLER_VERSION: 2.0.2

    working_directory: ~/repo

commands:
  setup_bundler_and_cache:
    steps:
      - checkout
      # Download and cache dependencies
      - restore_cache:
          keys:
            - v1-dependencies-{{ checksum "Gemfile.lock" }}
            # fallback to using the latest cache if no exact match is found
            - v1-dependencies-

      - run:
          name: install dependencies
          command: |
            gem install bundler -v 2.0.2
            bundle install --jobs=4 --retry=3 --path vendor/bundle

      - save_cache:
          paths:
            - ./vendor/bundle
          key: v1-dependencies-{{ checksum "Gemfile.lock" }}
jobs:
  build:
    executor: default
    steps:
      - setup_bundler_and_cache

      # Database setup
      - run: bundle exec rake db:create
      - run: bundle exec rake db:schema:load

      - add_ssh_keys:
          fingerprints:
            - "{$ SSH_KEY}"

      # collect reports
      - store_test_results:
          path: /tmp/test-results
      - store_artifacts:
          path: /tmp/test-results
          destination: test-results

  Rubocop_correction:
    executor: default
    steps:
      - setup_bundler_and_cache
      - run:
      　command: bundle exec rubocop -a
  RuboCop_test:
    executor: default
    steps:
      - setup_bundler_and_cache
      - run:
          command: bundle exec rubocop --fail-level w --display-only-fail-level-offenses

  Rspec_test:
    executor: default
    steps:
      - setup_bundler_and_cache
      - run:
          command: bundle exec rspec

  deploy:
    executor: default
    steps:
      - setup_bundler_and_cache
      #deploy with capistrano
      - run:
          name: Capistrano deploy
          command: |
            if [ "${CIRCLE_BRANCH}" != "master" ]; then
              exit 0
            fi
            bundle exec cap production deploy


workflows:
  version: 2.1
  build_test_and_deploy:
    jobs:
      - build
      - Rubocop_correction:
          requires:
            - build
      - RuboCop_test:
          requires:
            - build
      - Rspec_test:
          requires:
            - build
      - deploy:
          requires:
            - RuboCop_test
            - Rspec_test

```

以下エラー文

```

#!/bin/sh -eo pipefail
# ERROR IN CONFIG FILE:
# [#/jobs/Rubocop_correction] only 1 subschema matches out of 2
# 1. [#/jobs/Rubocop_correction/steps/4] 0 subschemas matched instead of one
# |   1. [#/jobs/Rubocop_correction/steps/4] extraneous key [command] is not permitted
# |   |   Permitted keys:
# |   |     - persist_to_workspace
# |   |     - save_cache
# |   |     - run
# |   |     - checkout
# |   |     - attach_workspace
# |   |     - store_test_results
# |   |     - restore_cache
# |   |     - store_artifacts
# |   |     - add_ssh_keys
# |   |     - deploy
# |   |     - setup_remote_docker
# |   |   Passed keys:
# |   |     []
# |   2. [#/jobs/Rubocop_correction/steps/4] Input not a valid enum value
# |   |   Steps without arguments can be called as strings
# |   |     enum:
# |   |     - checkout
# |   |     - setup_remote_docker
# |   |     - add_ssh_keys
# 
# -------
# Warning: This configuration was auto-generated to show you the message above.
# Don't rerun this job. Rerunning will have no effect.
false

Exited with code exit status 1
CircleCI received exit code 1

```

## 原因はインデントミス
runコマンドを実行する際のインデントが1つ分足りておらず、コマンドとして認識されていなかったようです。

正しいフォーマットに訂正することでbuildが成功しました。

```..circkeci/config.yml

Rubocop_correction:
    executor: default
    steps:
      - setup_bundler_and_cache
      - run:
        command: bundle exec rubocop -a #<-- インデントが一つ足りていなかった
                                             
 ------------------------------------------------------------------------------

Rubocop_correction:
    executor: default
    steps:
      - setup_bundler_and_cache
      - run:
          command: bundle exec rubocop -a #<-- 正しくはスペースキー2回分

```

##