Issue #3173037 by bnjmnm: Prettier not run on Ckeditors imagecaption's plugin.es6.js

(cherry picked from commit 7e524d3b)

core/modules/ckeditor/js/plugins/drupalimagecaption/plugin.es6.js

@@ -215,7 +215,9 @@
                   'figcaption',
                 );
 
-                const captionFilter = new CKEDITOR.filter(widgetDefinition.editables.caption.allowedContent);
+                const captionFilter = new CKEDITOR.filter(
+                  widgetDefinition.editables.caption.allowedContent,
+                );
                 captionFilter.applyTo(caption);
 
                 // Use Drupal's data-placeholder attribute to insert a CSS-based,