fixed issue in documentation of while loop

Readme.md

@@ -94,17 +94,13 @@ The while loop takes N arguments. The first argument, the conditional, must eval
 ```
 (while (cond) (form1)....... (formN))
 
-(export iter 1)
-(while (< iter 4) 
-    (print (concat "current iteration: "
-                   (string iter)))
-    (export iter 
-            (+ iter 1)))
+(export cond T)
+(while cond 
+    (print "this will only be printed once")
+    (export cond F))
 
 Output:
-current iteration: 1
-current iteration: 2
-current iteration: 3
+this will only be printed once
 ```
 
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