title: IntelliJ IDEA prettier plugin does not apply given configuration
body: <p>I installed the IntelliJ Prettier plugin for web development. Unfortunately I was not able to specifiy a custom configuration, which consists of this line: <code>"prettier.singleQuote": true</code>.</p>
  
  <p>What I tried:
  Under <code>Languages &amp; Frameworks &gt; JavaScript &gt; Prettier</code> I specified once the global and once the project specific prettier installation. (In the screenshot you'll see the global package). <a href="https://i.stack.imgur.com/L1EPM.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/L1EPM.jpg" alt="enter image description here"></a></p>
  
  <p>Not regarding configuration file I tried creating a <code>.prettierrc</code> file in my projects' root where the <code>package.json</code> lies. The config file looks like this</p>
  
  <p>.prettierrc</p>
  
  <pre><code>{
    "prettier.printWidth": 5,
    "prettier.trailingComma": "none",
    "prettier.singleQuote": true
  }
  </code></pre>
  
  <p>Since this didn't work I renamed it to <code>.prettierrc.json</code> which didn't work either. Then I tried to use the "prettier" tag in my projects' <code>package.json</code> like this:</p>
  
  <pre><code>  "devDependencies": {
      "enzyme": "^3.3.0",
      "enzyme-adapter-react-16": "^1.1.1",
      "enzyme-to-json": "^3.3.3",
      "jest-fetch-mock": "^1.5.0",
      "jest-styled-components": "5.0.0",
      "prettier": "^1.13.5",
      "react-test-renderer": "^16.2.0"
    },
    "prettier": {
      "prettier.singleQuote": true
    },
  </code></pre>
  
  <p>Still when I format with <code>CTRL+ALT+SHIFT+P</code> it only applies the default configuration and not the provided one, thus replacing all existing single to double-quotes.</p>
  
  <p>I also tried a few things mentioned <a href="https://intellij-support.jetbrains.com/hc/en-us/community/posts/360000167624-How-can-I-change-the-prettier-settings-" rel="noreferrer">here</a> (IntelliJ Forum), which didn't work for me either. What am I missing? (Tried also a desperate IDEA restart ...)</p>