added note about "ssty sane"

readme.md

@@ -172,6 +172,8 @@ https://invisible-island.net/xterm/ctlseqs/ctlseqs.html
 https://learn.microsoft.com/en-us/windows/console/
 
 ## bugs
+- If Enter key doesn't work as expected on linux, write `stty sane` to `~/.profile`. 
+  It will change terminal settings from insane to sane xD
 - Double buffering is still new, set ENABLE_DBUF to 0 if you see glitches
 - Double width characters like 彁 are not fully supported. Terminals do not
   handle these consistently and there is no portable way to reliably