Fix coding style with phpcs PSR-12 standard

Signed-off-by: davidarendsen <davidarendsen@hey.com>

src/Exception/FunctionRequiredSettingMissingException.php

@@ -4,11 +4,10 @@ namespace Arendsen\FluxQueryBuilder\Exception;
 
 use Exception;
 
-class FunctionRequiredSettingMissingException extends Exception {
-    
+class FunctionRequiredSettingMissingException extends Exception
+{
     public function __construct(string $functionName, string $message)
     {
         parent::__construct('Function ' . $functionName . ' - ' . $message);
     }
-
-}
+}