Change link within block
The page layout is broken but I assume that you are talking about Services menu block. Based on the HTML source it is a menu block and a main menu to be specific. So to the change the link go to Structure &gt; Menus &gt; Main Menu and change the link path there.

UPDATE:

Since the page is broken in my end my above answer is wrong. As @iamroald comment it is created via Views. Go to Structure &gt; Views &gt; Services. It seems like there is a Token substitution in there.