Update README.md

Switched from ending with a closed paranthesis (which wasn't open and possibly a remnant of an earlier text version) to an exclamation pointing the call to arms. Or maybe it was the smile of a smiley, lacking the eyes... Either way I reckon the lonely parenthesis had no place there.

README.md

@@ -80,4 +80,4 @@ Optimal parameters in Automatic1111/ComfyUI:
 
 ## End
 
-Let's remove models that copy each other from the top and put one that is actually developing, thank you)
+Let's remove models that copy each other from the top and put one that is actually developing, thank you!