Issue #2933000 - Fix spall

Closes #2933000

modules/imagezoom_gallery/src/Plugin/Field/FieldFormatter/ImageZoomGalleryFormatter.php

@@ -81,8 +81,8 @@ class ImageZoomGalleryFormatter extends ImageZoomFormatter {
       ];
     }
 
-    $additonal_settings = $this->settingsToArray($this->getSetting('imagezoom_additional'));
-    $settings += $additonal_settings;
+    $additional_settings = $this->settingsToArray($this->getSetting('imagezoom_additional'));
+    $settings += $additional_settings;
 
     $this->moduleHandler->alter('imagezoom_settings', $settings);