Fix whitespace in wiki link filtering specs

This ensures this spec is the same in both CE and EE.

spec/lib/banzai/filter/wiki_link_filter_spec.rb

@@ -90,7 +90,7 @@ describe Banzai::Filter::WikiLinkFilter do
         "javascript:",
         "java\0script:",
         "   javascript:"
-        ]
+      ]
 
       invalid_slugs.each do |slug|
         context "with the slug #{slug}" do