Rename feed method to correct name (#6557)

* rename method to correct name

* fix spec

app/services/articles/feed.rb

@@ -56,7 +56,7 @@ module Articles
     end
 
     # Test variation: More random
-    def default_home_feed_with_more_randomness
+    def default_home_feed_with_more_randomness_experiment
       @randomness = 7
       _featured_story, stories = default_home_feed_and_featured_story(user_signed_in: true)
       stories

spec/services/articles/feed_spec.rb

@@ -137,9 +137,9 @@ RSpec.describe Articles::Feed, type: :service do
     end
   end
 
-  describe "#default_home_feed_with_more_randomness" do
+  describe "#default_home_feed_with_more_randomness_experiment" do
     let!(:new_story) { create(:article, published_at: 10.minutes.ago, score: 10) }
-    let(:stories) { feed.default_home_feed_with_more_randomness }
+    let(:stories) { feed.default_home_feed_with_more_randomness_experiment }
 
     it "includes stories" do
       expect(stories).to include(old_story)