Update README.md

README.md

@@ -174,7 +174,7 @@ Last but not least, I would like to acknowledge and thank the following people:
 
 Every contribution to this repository is highly appriciated! Feel free to create pull requests to improve this firmware as ultimately you are going to help everyone. 
 
-If you want to donate to keep this firmware updated, use the link below:
+If you want to donate to keep this firmware updated, please use the link below:
 
 [![paypal](https://www.paypalobjects.com/en_US/NL/i/btn/btn_donateCC_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=CU2SWN2XV9SCY&currency_code=EUR&source=url)