Improve Turing sample (#3040)

* Improve Turing sample

* Move more complex sample to different file

* Undo changes to original file

samples/Turing/turing.t

@@ -1,19 +1,19 @@
 % Accepts a number and calculates its factorial
 
 function factorial (n: int) : real
-    if n = 0 then
-        result 1
-    else
-        result n * factorial (n - 1)
+	if n = 0 then
+		result 1
+	else
+		result n * factorial (n - 1)
    end if
 end factorial
 
 var n: int
 loop
-    put "Please input an integer: " ..
-    get n
-    exit when n >= 0
-    put "Input must be a non-negative integer."
+	put "Please input an integer: " ..
+	get n
+	exit when n >= 0
+	put "Input must be a non-negative integer."
 end loop
 
-put "The factorial of ", n, " is ", factorial (n)
+put "The factorial of ", n, " is ", factorial (n)