Parser error when inserting a manual newline with character `\`

You get also this error if you do insert a manual newline with character `\`

like 
```
   system = softwareSystem "name" \
             "long description" "TAGS" {
   }
```

_Originally posted by @FlorianGWE in https://github.com/dirkgroot/structurizr-dsl-intellij-plugin/issues/58#issuecomment-1669426807_
            