tweak

Validators-in-scripting-languages.md

@@ -66,16 +66,14 @@ As an example, the following PHP script, used as a compare script,
 requires that results match exactly:
 
 ```php
-#! /usr/bin/env php
+#!/usr/bin/env php
 <?php
-
 $f1 = $argv[1];
 $f2 = $argv[2];
 if (md5_file($f1) != md5_file($f2)) {
     fwrite(STDERR, "$f1 and $f2 don't match\n");
     exit(1);
 }
-
 ?>
 ```