Problem with wp-includes/category-template.php

I tried to edit the category-template.php file to change the tag cloud function on line 523 All I changed was the numbers of:
‘largest’ and ‘number’
‘smallest’ => 8, ‘largest’ => 22, ‘unit’ => ‘pt’, ‘number’ => 45,

Now I get the error message:
Parse error: syntax error, unexpected ‘<‘ in /home/mysite/public_html/wp-includes/category-template.php on line 676

When I tried to use my backup file, I still get the same error message.
Is there someway to get a clean copy of the category-template.php file?

Thanks,
Jim