* Update 100-gof-design-patterns.md Add resources for design patterns. * Update content/roadmaps/101-backend/content/114-design-and-development-principles/100-gof-design-patterns.md * Update content/roadmaps/101-backend/content/114-design-and-development-principles/100-gof-design-patterns.md Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>