How to edit the link in RSS feed?

So the RSS that wordpress generates looks something like this:

Post title
Post snippet here. . . → Read More:Post Title (clickable)

Does anyone know how I stop it displaying the “→ Read More” bit and clickable post title in the snippet? I want it to look like it does on the wordpress site https://www.ads-software.com/news/feed/ here’s what mine looks like https://www.chrispoole.me.uk/blog/feed/