[style-guide] Lambda closing paren defaults

There's inconsistency of how closing bracket is placed with default Fantomas settings:
```fsharp
// closing bracket is on the new line
seq {
//
return ()
}

// closing bracket is on the expression line
seq (fun _ ->
//
())

// closing bracket is on the new line
someTupledFunction (
"A very long string making all of this multi-line",
"A very long string making all of this multi-line"
)
```

I suggest we could try to move closing bracket in lambdas to a new line, so it's more inline with other similar constructions. It would also make it easier to edit the lambda if the closing bracket was on a new line:
```fsharp
seq (fun _ ->
//
()
)
```

Moving the closing bracket like this is already supported in Fantomas, but it's not turned on by default.