I am new to ruby and rails and am working on my README.md for my first commit. I have this subheader:

###Configuration

Rails defaults to using SQLite for the database. If you would prefer to use another database driver you will need to edit config/database to point to your database. Here is an example configuration for PostgreSQL:
```ruby
default: &default
  adapter: postgresql
  encoding: unicode
  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
  username: myapp
  password: password1
  timeout: 5000

development:
  <<: *default
  database: ookmakyi_dev

test:
  <<: *default
  database: ookmakyi_test

production:
  <<: *default
  database: ookmakyi
```

However I noticed RubyMine isn’t highlighting my code and when I check it is giving me these errors related to my database example:

Expected: ; or end of line :32

Unexpected: a& :32

Expected: ; or end of line :33

Expected: ; or end of line :34

Expected: ; or end of line :35

Unexpected: < :35

Expected: string end :50

Is it correct?