Change http inside my website to https

Looking over the source code in my website
I see this: [blocked] The page at,700]
How can I change it to https://
I do not see any html code in Concrete 5?

You would have to change this in your theme.

Thanks Tim, I am a logo designer and do not have that much knowledge in regards to website work. I had a look at the themes page and it has a load of templates and at the bottom just my logo. It does not show html text?

<link href=',700' rel='stylesheet' type='text/css'>
<!-- CORE CONCRETE  ================================================== -->

<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>Graphic Design Agency Glasgow | Branding | Print | G3 Creative</title>

You will need to FTP into the site and take a look at the code and change it in the theme. If you send me an email I can help you with this.