docs(website): fix link to github-keepachangelog template (#694)

Author: tcarmet

website/docs/integration/github.md

@@ -208,4 +208,4 @@ This will generate a changelog such as:
 <!-- generated by git-cliff -->
 ```
 
-Alternatively, you can use [`github-keepachangelog.toml`](https://github.com/orhun/git-cliff/tree/main/examples/github.toml) template which is a mix of GitHub and [Keep a Changelog](https://keepachangelog.com/en/1.1.0/) formats.
+Alternatively, you can use [`github-keepachangelog.toml`](https://github.com/orhun/git-cliff/tree/main/examples/github-keepachangelog.toml) template which is a mix of GitHub and [Keep a Changelog](https://keepachangelog.com/en/1.1.0/) formats.