Strings Markdown Complete

All additions to the strings article are now in the strings.md file.
This looks a lot like a hash, which can be confusing. This should be reformatted to look similar to irb:

    > array1
    => ["You're", "about", "to", "see", "a", "list", "of", "items", "that", "need", "to", "be", "stored", "in", "an", "array"]`