Show how to use call = `base::call()` in `abort()`

[olivroy]

I discovered yesterday that if you wanted to hard-code the call argument, it was possible, but never found this in rlang's abort() documentation,

I thought adding an example could be useful? Sometimes, I think it can be useful to hard-code it? May be easier to learn to use this than all of rlang's infrastructure.

[lionel-]

Thanks!