Add and apply RSpec/Rails/InferredSpecType rule

This rule was added in rubocop-rspec 2.14.0.

spec/helpers/budget_investments_helper_spec.rb

@@ -1,6 +1,6 @@
 require "rails_helper"
 
-RSpec.describe BudgetInvestmentsHelper, type: :helper do
+RSpec.describe BudgetInvestmentsHelper do
   describe "#set_direction" do
     it "returns ASC if current_direction is DESC" do
       expect(set_direction("desc")).to eq "asc"

spec/helpers/comments_helper_spec.rb

@@ -10,7 +10,7 @@ require "rails_helper"
 #     end
 #   end
 # end
-RSpec.describe CommentsHelper, type: :helper do
+RSpec.describe CommentsHelper do
   describe "#user_level_class" do
     def comment_double(as_administrator: false, as_moderator: false, official: false)
       user = instance_double("User", official?: official, official_level: "Y")

spec/helpers/settings_helper_spec.rb

@@ -1,6 +1,6 @@
 require "rails_helper"
 
-RSpec.describe SettingsHelper, type: :helper do
+RSpec.describe SettingsHelper do
   describe "#setting" do
     it "returns a hash with all settings values" do
       Setting["key1"] = "value1"