Update liquid to 5.0

[MasterEnoc]

• Updated the versions and releases in the scraper file
• Ensured the license is up-to-date and that the documentation's entry in the array in about_tmpl.coffee matches it's data in self.attribution
• Ensured the icons and the SOURCE file in public/icons/your_scraper_name/ are up-to-date if the documentation has a custom icon
• Ensured self.links contains up-to-date urls if self.links is defined
• Tested the changes locally to ensure:
  • The scraper still works without errors
  • The scraped documentation still looks consistent with the rest of DevDocs
  • The categorization of entries is still good

[simon04]

Thank you!