Remove incorrect memory address pointer

Would point to the wrong address and pull the wrong static directory

src/Router/StaticFileHandler.php

@@ -35,7 +35,7 @@ public function getFullStaticFilePath(string $filePath): null | string{
 				}else{
 					// This is a setting that serves from root URIs (/). It must be processed last so that
 					// other static directories can have a chance to be served
-					$rootStaticServingSetting = &$staticDirectorySetting;
+					$rootStaticServingSetting = $staticDirectorySetting;
 				}
 			}