Add theme URL to .upptimerc.yml

Author: LuggaPugga

.upptimerc.yml

@@ -14,6 +14,7 @@ status-website:
   # Add your custom domain name, or remove the `cname` line if you don't have a domain
   # Uncomment the `baseUrl` line if you don't have a custom domain and add your repo name there
   cname: status.faststats.dev
+  themeUrl: https://status.faststats.dev/theme.css
   # baseUrl: /your-repo-name
   logoUrl: https://raw.githubusercontent.com/upptime/upptime.js.org/master/static/img/icon.svg
   name: FastStats Status