Error with parser type in the documentation

[TheDeadOne]

steps

1. Open https://www.scala-sbt.org/1.x/docs/Parsing-Input.html#Combining+parsers
2. Copy-paste next snippet to sbt console or build.sbt

val color: Parser[String] = literal("blue") | literal("green")

val select: Parser[String] = literal("fg") | literal("bg")

val setColor: Parser[(String, Char, String)] = select ~ ' ' ~ color

problem

error: type mismatch;
found   : sbt.internal.util.complete.Parser[((String, Char), String)]
required: sbt.internal.util.complete.Parser[(String, Char, String)]
val setColor: Parser[(String, Char, String)] = select ~ ' ' ~ color

expectation

Parser of type that described in the documentation.

notes

sbt 1.2.8, 1.6.2
scala 2.12.10