Missing or extra word in error message

We have an error message where we're missing the word "flag" or "option".

```diff
- This import is never used as a value and must use 'import type' because the 'importsNotUsedAsValues' is set to 'error'.
+ This import is never used as a value and must use 'import type' because the 'importsNotUsedAsValues' flag is set to 'error'.
```