Fix rubocop error about line being too long

Author: biggianteye

app/models/sponsors_search.rb

@@ -26,6 +26,8 @@ def by_name
   end
 
   def by_chapter
-    @sponsors = sponsors.joins(:workshops).where('workshops.chapter_id' => chapter).group('sponsors.id') if chapter.present?
+    if chapter.present?
+      @sponsors = sponsors.joins(:workshops).where('workshops.chapter_id' => chapter).group('sponsors.id')
+    end
   end
 end