descriptions of entries checked and either incorporated to keywords and inspirations or redundancies removed

entries/stratagus.md

@@ -3,13 +3,11 @@
 - Home: https://wargus.github.io/stratagus.html
 - State: mature
 - Platform: Windows, Linux, macOS
-- Keyword: game engine, strategy
+- Keyword: game engine, strategy, real time
 - Code repository: https://github.com/Wargus/stratagus.git
 - Code language: C++
 - Code license: GPL-2.0
 
-Real-time strategy gaming engine.
-
 ## Building
 
 - Build system: CMake