fixed note

Gemfile

@@ -20,7 +20,7 @@ gem "default_value_for", "~> 3.0.0"
 gem "mysql2", group: :mysql
 gem "pg", group: :postgres
-# Auth
+# Authentication libraries
 gem "devise", '3.2.4'
 gem "devise-async", '0.9.0'
 gem 'omniauth', "~> 1.2.2"
@@ -278,5 +278,3 @@ gem "newrelic_rpm"
 gem 'octokit', '3.7.0'
 gem "rugments"
-
-NOTE: The authentication gem used in GitLab is called 'Devise'