Changed '$config' to '$config_local'

The var `$config` doesn't exist.  Change it to the intended value of `$config_local`.

setup-sqlserver-bootstrap.ps1

@@ -14,7 +14,7 @@ $create_sqlserver_login_and_database_local = $config_local + "/create-sqlserver-
 $create_sqlserver_url = $config_url + "/create-sqlserver.sql"
 $create_sqlserver_local = $config_local + "/create-sqlserver.sql"
 
-Write-Host "Creating directory: $config`n"
+Write-Host "Creating directory: $config_local`n"
 New-Item -Path $config_local -Type Directory -Force | Out-Null
 
 Write-Host "Downloading setup files...`n"