DEV: Correct typos and spelling mistakes (#12812)

Over the years we accrued many spelling mistakes in the code base. 

This PR attempts to fix spelling mistakes and typos in all areas of the code that are extremely safe to change 

- comments
- test descriptions
- other low risk areas

spec/components/validators/max_emojis_validator_spec.rb

@@ -21,7 +21,7 @@ describe MaxEmojisValidator do
       validate
       expect(record.errors[:title][0]).to eq(I18n.t("errors.messages.max_emojis", max_emojis_count: 3))
 
-      record.title = ':joy: :blush: :smile: is not only about emojis: Happyness::start()'
+      record.title = ':joy: :blush: :smile: is not only about emojis: Happiness::start()'
       validate
       expect(record.valid?).to be true
     end