Fix GitLab Raw URL in `_posts/2021-02-05-apis-for-all-the-things.md`
Add link to the raw url instead of the blob url, see:
https://gitlab.com/fdroid/fdroiddata/-/blob/master/metadata/org.fdroid.fdroid.yml
https://gitlab.com/fdroid/fdroiddata/-/raw/master/metadata/org.fdroid.fdroid.yml