[devdocsgjs/main: 927/1867] Require image_optim in images.rb

[Andy Holmes <andyholmes src gnome org>]

commit 811c9b020446357a67ed5bb8caa9fd32628d2534
Author: Jasper van Merle <jaspervmerle gmail com>
Date:   Sun Sep 8 15:35:47 2019 +0200

    Require image_optim in images.rb

 lib/docs/filters/core/images.rb | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/lib/docs/filters/core/images.rb b/lib/docs/filters/core/images.rb
index 4e86759f..ad9fe26b 100644
--- a/lib/docs/filters/core/images.rb
+++ b/lib/docs/filters/core/images.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require 'image_optim'
+
 module Docs
   class ImagesFilter < Filter
     include Instrumentable