Possibly clearer wording
Inspired by [this Reddit post](https://www.reddit.com/r/rust/comments/5nmjq3/can_someone_please_help_me_get_rust_going_in/) - "replace" is kind of confusing there, so make it clearer by explicitly telling the reader to run a different command.
@@ -61,7 +61,7 @@ $ ./main
Hello, world!
```
-On Windows, just replace `./main` with `.\main.exe`. Regardless of your
+On Windows, run `.\main.exe` instead of `./main`. Regardless of your
operating system, you should see the string `Hello, world!` print to the
terminal. If you did, then congratulations! You've officially written a Rust
program. That makes you a Rust programmer! Welcome.
