Fixed debug message (ref #2523)

Author: gsherwood

src/Tokenizers/PHP.php

@@ -1692,7 +1692,7 @@ protected function processAdditional()
  if ($scopeCloser !== $numTokens) {
  if (PHP_CODESNIFFER_VERBOSITY > 1) {
  $line = $this->tokens[$i]['line'];
- echo "\t* token $i on line $line changed from T_STRING to T_FN".PHP_EOL;
+ echo "\t* token $i on line $line processed as arrow function".PHP_EOL;
  }
 
  $this->tokens[$i]['code'] = T_FN;