Take into account overrides key in .prettierrc.js

[dcyriller]

Prettier needs the file extension to apply this kind of override:

module.exports = {
  semi: true, // this will be applied to all files, javascript files for instance
  overrides: [
    {
      files: '**/*.hbs',
      options: {
        singleQuote: false, // this will be applied to hbs files only
      },
    },
  ],
};