fix link to "releases"
An opinionated static site generator written in Rust.
## Installation
-You can get the latest release by going to the [Release page](https://..).
+You can get the latest release by going to the [Release page](https://github.com/Keats/gutenberg/releases).
Alternatively, if you have the rust toolchain on your computer, you can also install it
through Cargo: `cargo install gutenberg`.
