Add content to engineering manager roadmap (#7779)

* Update system-design-and-architecture@iX4HPgoiEbc_gze1A01n4.md

* Update src/data/roadmaps/engineering-manager/content/system-design-and-architecture@iX4HPgoiEbc_gze1A01n4.md

* Update src/data/roadmaps/engineering-manager/content/system-design-and-architecture@iX4HPgoiEbc_gze1A01n4.md

---------

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

src/data/roadmaps/engineering-manager/content/system-design-and-architecture@iX4HPgoiEbc_gze1A01n4.md

@@ -1 +1,8 @@
 # System Design and Architecture
+
+System design and architecture are critical for building robust software systems. For engineering managers, it involves not only technical expertise but also leadership in decision-making, project management, and cross-team collaboration.
+
+Visit the following resources to learn more:
+
+- [@article@System Design Roadmap](https://roadmap.sh/system-design)
+- [@article@Software Architect Roadmap](https://roadmap.sh/software-architect)