fix typo in README.md

README.md

@@ -21,7 +21,7 @@ As someone with close to 2500 tracks in my Liked songs (rookie numbers, ik), I n
 Heartify is currently a work in progress, but you can install it here:
 
 ```sh
-npm install -g heartify-cli@alpha.2
+npm install -g heartify-cli@alpha2
 ```
 
 ### Authorization