message: Add return type to contribution example
diff: @@ -45,11 +45,11 @@ export function FunctionFactory(params: Params): FunctionFactory {
  const privateVariable = 10
  const anotherPrivateVariable = 20
  - function publicMethod() {
  + function publicMethod(): number {
  return parameter + privateVariable
  }
  - function anotherPublicMethod() {
  + function anotherPublicMethod(): number {
  return parameter + anotherPrivateVariable
  }
  