message: docs: fix the package name
diff: @@ -9,14 +9,14 @@ A CLI tool for creating a kintone plugin!
  ## Usage
  ```
  -npx create-kintone-app ${name}
  +npx create-kintone-plugin ${name}
  ```
  or
  ```
  -npm install -g create-kintone-app
  -create-kintone-app ${name}
  +npm install -g create-kintone-plugin
  +create-kintone-plugin ${name}
  ```
  After the command has been finished, you can start development kintone plugin!
  @@ -32,7 +32,7 @@ npm start
  if you want to use console messages in Japanese, you can use `--lang ja` option.
  ```
  -npx create-kintone-app ${name} --lang ja
  +npx create-kintone-plugin ${name} --lang ja
  ```
  If you set `LANG` environment variable `ja_XX.XXX`, the lang option will be `ja` automatically.
  