Format codebase with prettier

src/music/components/indicator.tsx

@@ -41,7 +41,8 @@ class Indicator extends React.Component<Props, State> {
             <button
                 type="button"
                 onClick={this.click.bind(this)}
-                className={button_classes}>
+                className={button_classes}
+            >
                 <span className="icon is-medium">
                     <i className={icon_classes}></i>
                 </span>