examples/nade-trajectories/readme: fix typo

Author: markus-wa

examples/nade-trajectories/README.md

@@ -6,6 +6,6 @@ This example shows how to create a overview of grenade trajectories of a match.
 
 `go run nade_trajectories.go -demo /path/to/demo > out.jpg`
 
-This will create a JPGE with grenade trajectories of the first five rounds. The reason it doesn't do more trajectories is because the image would look quite cluttered otherwise.
+This will create a JPEG with grenade trajectories of the first five rounds. The reason it doesn't do more trajectories is because the image would look quite cluttered otherwise.
 
 ![Resulting map overview with trajectories](https://raw.githubusercontent.com/markus-wa/demoinfocs-golang/master/examples/nade-trajectories/nade_trajectories.jpg)