Updating to use time_ago_in_words method to make this a little cleaner to read

Author: A-Wheeto

app/services/cms/models/collections/email_template.rb

@@ -49,10 +49,9 @@ def merge_content(text, user)
           achievements = user.sorted_completed_cpd_achievements_by(programme: @programme)
           if achievements.any?
             achievement = achievements.last
-            last_cpd_completed_ago = distance_of_time_in_words(achievement.updated_at, DateTime.now)
 
             merges += [
-              ["{last_cpd_completed_ago}", last_cpd_completed_ago],
+              ["{last_cpd_completed_ago}", time_ago_in_words(achievement.updated_at)],
               ["{last_cpd_completed_year}", "in #{achievement.updated_at.year}"],
               ["{last_cpd_title}", achievement.activity.title]
             ]

spec/services/cms/models/collections/email_template_spec.rb

@@ -92,7 +92,7 @@
       travel_back
     end
 
-    it "should replace achievement placeholders using distance_of_time_in_words" do
+    it "should replace achievement placeholders using time_ago_in_words" do
       content = @model.process_blocks(text_content, user)
       text = content.dig(2, :children, 0, :text)
       expect(text).to eq("You completed Past activity about 1 month ago.")