fix(environment-setup): set scarb version first (#1472)

If you try `--version` before you tell `asdf` which version to use, you
get an error:

```
No version is set for command scarb
Consider adding one of the following versions in your config file at
scarb 2.9.2
```

components/Starknet/modules/quick-start/pages/environment-setup.adoc

@@ -98,18 +98,18 @@ asdf plugin add scarb
 asdf install scarb latest
 ----
 
-. Restart the terminal and verify that Scarb is installed correctly:
+. Set a global version for Scarb (need for using `scarb init`):
 +
 [source, bash]
 ----
-scarb --version
+asdf global scarb latest
 ----
 
-. Set a global version for Scarb (need for using `scarb init`):
+. Restart the terminal and verify that Scarb is installed correctly:
 +
 [source, bash]
 ----
-asdf global scarb latest
+scarb --version
 ----
 
 === Windows installation