Fix prettier integration, format (#31)

* Fix prettier integration, format

* Reformat again

frontend/components/Document/components/DocumentHtml/DocumentHtml.js

@@ -4,19 +4,18 @@ import { observer } from 'mobx-react';
 
 import styles from './DocumentHtml.scss';
 
-@observer
-class DocumentHtml extends React.Component {
+@observer class DocumentHtml extends React.Component {
   static propTypes = {
     html: PropTypes.string.isRequired,
-  }
+  };
 
   componentDidMount = () => {
     this.setExternalLinks();
-  }
+  };
 
   componentDidUpdate = () => {
     this.setExternalLinks();
-  }
+  };
 
   setExternalLinks = () => {
     const links = ReactDOM.findDOMNode(this).querySelectorAll('a');
@@ -25,12 +24,12 @@ class DocumentHtml extends React.Component {
         link.target = '_blank'; // eslint-disable-line no-param-reassign
       }
     });
-  }
+  };
 
   render() {
     return (
       <div
-        className={ styles.document }
+        className={styles.document}
         dangerouslySetInnerHTML={{ __html: this.props.html }}
       />
     );