Update concept.md

Author: oblomov-dev

docs/technical/concept.md

@@ -246,7 +246,7 @@ Limitations:
 
 By relocating UI control to the ABAP backend and using UI5 purely for HTML rendering, abap2UI5 enables pragmatic, maintainable business application development — without the complexity of SPA architectures.
 
-Happy ABAPing!
+Happy ABAPing! 🦖🦕
 
 **References:**
 - [htmx in a nutshell](https://htmx.org/docs/#introduction)