Joomla - Fix a Category Link

Hello freelancers, Today i'm having a problem with the links generated automaticly trough php in a Category Section. Link: [login to view URL] You'll able to see that the links got more than they actually need. Eg: [login to view URL]:requisitos-legais-para-instituicao-de-taxas-no-ordenamento-juridico-brasileiro-analise-dos-novos-tributos-instituidos-pelo-estado-do-rio-de-janeiro&catid=28:artigos-da-revista&Itemid=45 When just [login to view URL] is necessary. I'm a web designer and got a little programing skills but i'm not being able to find the code designed to make this functionality works correctly. I cannot tell you when it started to happen, neither if it's a configuration conflict, because i also don't know. All i know is that i'm stucked in this string: <?php echo $this->item->introtext; ?> which i'm right that it generates each article description and link. You'll be able to find it in /public_html/templates/business/html/com_content/category/[login to view URL] I've marked the string inside the file. You have 1 hour to do the work. The price is fixed. Don't bid if you don't afford to make it.