Chore: update lesson URLs for Advanced HTML/CSS course

[01zulfi]

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1. Because:

Related to:

1. Cleaning up folder/file structure in the curriculum repository top-meta#109
2. Add advanced_html_css folder curriculum#23899

2. This PR:

1. Replace html_and_css_lessons.rb with advanced_html_and_css_lessons.rb & intermediate_html_and_css_lessons.rb
   • To be more inline with the course structure on the website.
2. Update lesson urls of Advanced HTML/CSS course based on Add advanced_html_css folder curriculum#23899

3. Additional Information:

n/a

[KevinMulhern]

Looks great @01zulfi 💪