Update _getting-started/index.md

Co-authored-by: Sébastien Doeraene <[email protected]>

Author: julienrf

_getting-started/index.md

@@ -158,7 +158,7 @@ allowing for a fast edit/run/debug cycle. sbt will also generate a `target` dire
 which you can ignore.
 
 When you’re finished experimenting with this project, press `[Enter]` to interrupt the `run` command.
-Then type `exit` or press `[Ctrl][d]` to exit sbt and return to your command line prompt.
+Then type `exit` or press `[Ctrl+D]` to exit sbt and return to your command line prompt.
 
 ## Next Steps