Merge pull request 'change style editor link button match desgin' (#110) from dev-manhph1-figbug into dev

Reviewed-on: #110

assets/scss/common/editor.scss

@@ -143,6 +143,10 @@
   border-bottom-color: #67ccff;
 }
 
+.toastui-editor-dark .toastui-editor-popup-add-image .toastui-editor-file-name.has-file {
+  color:#eee;
+}
+
 .toastui-editor-dark .toastui-editor-popup-body .toastui-editor-file-name {
   border-color: #303238;
   color: #eee;