style: fix PSR-12 code style violations

src/QUI/Timeline/Controls/Timeline.php

@@ -94,10 +94,12 @@ public function getBody()
         ));
 
         // load custom template (if set)
-        if ($this->getAttribute('displayTemplate')
+        if (
+            $this->getAttribute('displayTemplate')
             && file_exists($this->getAttribute('displayTemplate'))
         ) {
-            if ($this->getAttribute('displayCss')
+            if (
+                $this->getAttribute('displayCss')
                 && file_exists($this->getAttribute('displayCss'))
             ) {
                 $this->addCSSFile($this->getAttribute('displayCss'));