rename fields to improve understanding, adapting maintenance.py (intermediate)

games/framework/urho3d.md

@@ -5,11 +5,11 @@ _Urho3D is a free lightweight, cross-platform 2D and 3D game engine._
 - Home: https://urho3d.github.io/
 - Download: https://sourceforge.net/projects/urho3d/files/Urho3D/
 - State: mature
-- Code: https://github.com/urho3d/Urho3D
-- Language(s): C++, Angelscript
+- Code repository: https://github.com/urho3d/Urho3D
+- Code language: C++, Angelscript
 - Code license: MIT
 
 ## Building
 
-Uses CMake
+- Build system: CMake