fixed typo 'wsgy.py' to 'wsgi.py'

README.md

@@ -31,7 +31,7 @@ It uses:
     for your site. There is only one user - you.
 1. Follow this long tutorial to get Flask running. It was way more work than it should be:
     https://www.digitalocean.com/community/tutorials/how-to-serve-flask-applications-with-uwsgi-and-nginx-on-ubuntu-16-04
-    - `wsgy.py` is the entry point. It calls `flash_cards.py`
+    - `wsgi.py` is the entry point. It calls `flash_cards.py`
     - This is my systemd file `/etc/systemd/system/flash_cards.service`: [view](flash_cards.service)
         - you can see the paths where I installed it, and the name of my virtualenv directory
     - when done with tutorial: