Update README.md

README.md

@@ -27,6 +27,6 @@ As you are going to run Homomm in the PHP process context, using a limited web s
      
 Hope you can enjoy it and let us know about any feedback: <a href="mailto:info@homomm.org" style="color:#e6d236;">info@homomm.org</a>
 	   
- ![Homomm on desktop](/Public/static/res/screenshot1.jpg)   
+ ![Homomm on desktop](/Public/static/res/screenshot1.png)   
      
- ![Homomm on mobile](/Public/static/res/screenshot2.jpg)
+ ![Homomm on mobile](/Public/static/res/screenshot2.png)