Bump version number in bottom-right to 2.3

I think it's about time that this number be updated, yeah? This isn't to
say that 2.3 is finished or almost finished or anything, this is just to
clearly differentiate that this isn't 2.2.

desktop_version/src/Render.cpp

@@ -31,7 +31,7 @@ void menurender()
 #if defined(MAKEANDPLAY)
         graphics.Print(-1,temp+35,"     MAKE AND PLAY EDITION",tr, tg, tb, true);
 #endif
-        graphics.Print( 310 - (4*8), 230, "v2.2", tr/2, tg/2, tb/2);
+        graphics.Print( 310 - (4*8), 230, "v2.3", tr/2, tg/2, tb/2);
 
         if(music.mmmmmm){
             graphics.Print( 10, 230, "[MMMMMM Mod Installed]", tr/2, tg/2, tb/2);