On https://brew.sh/blog/ there are a series of post titles and abstracts, where the post titles link to the full text of each 'blog post.
However, there are no visual affordances that the posts' titles are actually links to the full posts, or that there is any more of the post to read than the initial paragraph. An example of this is the post announcing v1.0.0 - it contains quite a bit of detail about the release, but it's not clear that all that information is there, because the heading of the post is not visually styled like a link, and there's no ~"read the full v1.0.0 article" link below the first paragraph.
Just having a "read more" link below each article's abstract would not be good for accessibility, because people using assistive technologies to browse the web often navigate through the links in a page (e.g. using Tab, or via a list of all links on the page) and in that case they'd just be presented with a series of identical "read more" links, rather than "read more about the v1.0.0 release" and so-on. It is possible to include extra text in links to give such users the context of the link, without having it appear visually, as per Example 1 in the Web Content Accessibility Guidelines (WCAG) Technique for hiding some link text with CSS.
If you would like to address this, then a good simple approach would be to include such "read more about X" links (with sufficient context for users of assistive technologies, as above) rather than having the headers for each post as links, as doing so overloads their purpose (generally, heading elements are for navigation within the current page; links are for navigation to other pages). However, if the heading links are to be kept, styling them in the same way as the other links on the site would be appropriate, so at least users know they're links.
A further, related issue [if you like I can file this separately] is that the contrast between link text and the page background is only 4.3:1, whereas 4.5:1 is recommended by WCAG as a minimum, and the contrast between body (non-link) text and link text is only 2.3:1, whereas at least 3:1 is a good minimum (and 4.5:1 is preferable if possible). One solution to this would be to lighten the link text a bit to get it to 4.5:1 and also have links visually underlined, so that even people who can't distinguish them from the body text by colour will still be able to tell they're links, due to the underline.