Enable ParenthesesAsGroupedExpression rule

.rubocop.yml

@@ -877,7 +877,7 @@ Lint/ParenthesesAsGroupedExpression:
                  Checks for method calls with a space before the opening
                  parenthesis.
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#parens-no-spaces'
-  Enabled: false
+  Enabled: true
 Lint/RequireParentheses:
   Description: >-

lib/api/entities.rb

@@ -143,7 +143,7 @@ module API
     class ProjectEntity < Grape::Entity
       expose :id, :iid
-      expose (:project_id) { |entity| entity.project.id }
+      expose(:project_id) { |entity| entity.project.id }
       expose :title, :description
       expose :state, :created_at, :updated_at
     end