If you are referring to collection pagination pages such as http://www.example.com/article?story=abc&page=1, we automatically add rel tags to the collection so this does not occur for SEO purposes.
You can read more regarding these tags at this link: https://webmasters.googleblog.com/2011/09/pagination-with-relnext-and-relprev.html
For changes to these, you would have to access the code of your specific theme. You can do this by going to your admin then going to Online store>> Theme. Then click the button with the 3 dot on it and you will have the option to edit HTML.
I hope that works out for you and your store, take care!