Update scripts.md (#1738)

missing word - be

Author: jesper-olsen

book/scripts.md

@@ -131,7 +131,7 @@ nu myscript.nu run
 # => running
 ```
 
-[Unlike modules](modules.html#main), `main` does _not_ need to exported in order to be visible. In the above example, our `main` command is not `export def`, however it was still executed when running `nu myscript.nu`. If we had used myscript as a module by running `use myscript.nu`, rather than running `myscript.nu` as a script, trying to execute the `myscript` command would not work since `myscript` is not exported.
+[Unlike modules](modules.html#main), `main` does _not_ need to be exported in order to be visible. In the above example, our `main` command is not `export def`, however it was still executed when running `nu myscript.nu`. If we had used myscript as a module by running `use myscript.nu`, rather than running `myscript.nu` as a script, trying to execute the `myscript` command would not work since `myscript` is not exported.
 
 It is important to note that you must define a `main` command in order for subcommands of `main` to be correctly exposed. For example, if we had just defined the `run` and `build` subcommands, they wouldn't be accessible when running the script: