README.md: fix broken link to logo (#73)

Co-authored-by: Andreas Deininger <adeininger@urbanonline.de>

Author: deining

README.md

@@ -1,7 +1,7 @@
 <h1 align="center">academeez - Open source learning platform for coders</h1>
 
 <p align="center">
-  <img src="https://www.academeez.com/_astro/logo-light.BUToeAsh_A0IIg.svg" alt="academeez-logo"/>
+  <img src="https://www.academeez.com/_astro/logo-light.BUToeAsh.svg" alt="academeez-logo"/>
   <br>
   <br>
   academeez is an open-source, MIT-licensed platform offering community-driven coding lessons for learners of all levels — from beginners taking their first steps in programming to experts looking to sharpen their skills.