Wordpress update and fixing problem with a plugin

Closed - This job posting has been filled and work has been completed.

Job Description

I am having a problem with my website (www.avenantlaw.com).

I installed a 'glossary' plugin and it created a bunch of dead links within the pages. I have uninstalled and deleted the plugin but the dead links are still there.

If you check here: http://www.avenantlaw.com/about-2/ you'll find a few links that lead to http://www.avenantlaw.com/about-2/Mediation%20and%20Disputes which is a page without any content.

It makes the website looks really unprofessional :(

Can anyone help me fix this as well as update the wordpress and the theme versions?