Andrew Kelley refines Zig Zen principles

The update to the Zig Zen reflects the ongoing maturation of the language's philosophy, shifting slightly from strict absolutes to a more pragmatic approach.

* **Idiomatic Over Obvious:** Changing "Only one obvious way to do things" to "There is an idiomatic way to do it" acknowledges that in systems programming, there isn't always a single obvious path, but there is a community-preferred approach.

* **Focusing on Logic:** Changing "Focus on code rather than style" to "Focus on logic, not style" clarifies what matters most in code reviews and design.

* **Separating Allocation and Deallocation:** Splitting the resource allocation and deallocation principle emphasizes that while allocation can fail, deallocation must strictly succeed.

* **User-Centric Focus:** Elevating "Together, we serve the users!" to a standalone motto underscores the ultimate goal of the Zig project over its technical dogmas.