Lambda ruling is not explicit about multi-argument functions

[MichaelChirico]

style/functions.qmd

Line 19 in 8d69afc

Use the new lambda syntax: `\(x) x + 1` when writing short anonymous functions (i.e. when you define a function in an argument without giving it an explicit name).

"an" here could be read to imply "don't use \() for functions of >1 argument", but all the examples are one-argument functions.

does the guide have opinions on functions with 0, >1, or variadic (...) arguments?