New translations editor.php (Chinese Simplified)

Author: ssddanbrown

lang/zh_CN/editor.php

@@ -48,7 +48,7 @@
     'superscript' => '上标',
     'subscript' => '下标',
     'text_color' => '文本颜色',
-    'highlight_color' => '',
+    'highlight_color' => 'Highlight color',
     'custom_color' => '自定义颜色',
     'remove_color' => '移除颜色',
     'background_color' => '背景色',