Fixed typo.

Author: jezdez

deploy/README.md

@@ -123,7 +123,7 @@ All right!
 
 You need to install your Heroku toolbelt which you can find here (you can skip the installation if you've already installed it during setup): https://toolbelt.heroku.com/
 
-> When running the toolbet installation program on Windows make sure to choose "Custom Installation" when being asked which components to install. In the list of components that shows up after that please additionally check the checkbox in front of "Git and SSH".
+> When running the Heroku toolbelt installation program on Windows make sure to choose "Custom Installation" when being asked which components to install. In the list of components that shows up after that please additionally check the checkbox in front of "Git and SSH".
 
 Please also create a free Heroku account here: https://id.heroku.com/signup/www-home-top