Wrong collective method docs example

[kpbochenek]

There is a lack of ":" after extension (ss: Seq[String]) in given example

[TheElectronWill]

Pasting this example in the repl actually works, I'm not sure it should.

[smarter]

This is intentional, see the end of the discussion in #9255, if you want to debate whether this is a good idea or not, I suggest opening a thread on https://contributors.scala-lang.org.