message: Correct Type-Checked Assignments example
  Fixes first part of
diff: @@ -47,7 +47,7 @@ let c:bool = n
  echo $a $b $c
  -let a:str b[str] c:int d:float[] = one [two three] 4 [5.1 6.2 7.3]
  +let a:str b:[str] c:int d:[float] = one [two three] 4 [5.1 6.2 7.3]
  echo $a
  echo @b
  echo $c
  