README.md in jekyll-theme-open-project-1.0.0.rc5 vs README.md in jekyll-theme-open-project-1.0.2

@@ -61,10 +61,9 @@
 
 ```ruby
 group :jekyll_plugins do
   gem "jekyll-seo-tag"
   gem "jekyll-data"
-  gem "jekyll-data"
   gem "jekyll-theme-open-project-helpers"
   # ...other plugins, if you use any
 end
 ```