If you are linking to another page on your DPG site, you only need to include the part of the address after the / at the end of the domain name.
General - Using HTML in image description

<a href="https://www.google.com">Link text here</a>
When linking to an external website be sure that you enter full URLs including the http:// or https:// prefix.

For example, to link to your blog page, you only need to enter /blog/:
<a href="/blog/">See more on my blog</a>